docs: Document GitHubAuthBackend.
docs: Document GitHubAuthBackend.

paxapy/zulip,TigorC/zulip,jphilipsen05/zulip,samatdav/zulip,sonali0901/zulip,niftynei/zulip,timabbott/zulip,dattatreya303/zulip,SmartPeople/zulip,ahmadassaf/zulip,arpith/zulip,samatdav/zulip,isht3/zulip,niftynei/zulip,calvinleenyc/zulip,jrowan/zulip,cosmicAsymmetry/zulip,mahim97/zulip,Galexrt/zulip,timabbott/zulip,j831/zulip,jackrzhang/zulip,jackrzhang/zulip,timabbott/zulip,ryanbackman/zulip,kou/zulip,dawran6/zulip,reyha/zulip,sonali0901/zulip,Jianchun1/zulip,umkay/zulip,grave-w-grave/zulip,jphilipsen05/zulip,eeshangarg/zulip,peguin40/zulip,andersk/zulip,umkay/zulip,andersk/zulip,cosmicAsymmetry/zulip,amyliu345/zulip,ryanbackman/zulip,amanharitsh123/zulip,arpith/zulip,blaze225/zulip,Juanvulcano/zulip,jrowan/zulip,reyha/zulip,souravbadami/zulip,SmartPeople/zulip,grave-w-grave/zulip,kou/zulip,arpith/zulip,amanharitsh123/zulip,j831/zulip,Jianchun1/zulip,reyha/zulip,brockwhittaker/zulip,dawran6/zulip,souravbadami/zulip,jackrzhang/zulip,eeshangarg/zulip,Diptanshu8/zulip,TigorC/zulip,zulip/zulip,punchagan/zulip,sonali0901/zulip,JPJPJPOPOP/zulip,Juanvulcano/zulip,samatdav/zulip,timabbott/zulip,dattatreya303/zulip,JPJPJPOPOP/zulip,punchagan/zulip,sonali0901/zulip,blaze225/zulip,dawran6/zulip,rishig/zulip,krtkmj/zulip,isht3/zulip,arpith/zulip,christi3k/zulip,blaze225/zulip,sup95/zulip,jainayush975/zulip,Galexrt/zulip,rht/zulip,shubhamdhama/zulip,sup95/zulip,rishig/zulip,aakash-cr7/zulip,umkay/zulip,Diptanshu8/zulip,mohsenSy/zulip,susansls/zulip,showell/zulip,synicalsyntax/zulip,SmartPeople/zulip,samatdav/zulip,sharmaeklavya2/zulip,JPJPJPOPOP/zulip,reyha/zulip,ryanbackman/zulip,timabbott/zulip,niftynei/zulip,Galexrt/zulip,sonali0901/zulip,calvinleenyc/zulip,mohsenSy/zulip,reyha/zulip,Diptanshu8/zulip,tommyip/zulip,amanharitsh123/zulip,AZtheAsian/zulip,amanharitsh123/zulip,PhilSk/zulip,calvinleenyc/zulip,shubhamdhama/zulip,JPJPJPOPOP/zulip,shubhamdhama/zulip,jphilipsen05/zulip,hackerkid/zulip,vabs22/zulip,krtkmj/zulip,peguin40/zulip,jackrzhang/zulip,ahmadassaf/zulip,SmartPeople/zulip,vikas-parashar/zulip,samatdav/zulip,kou/zulip,joyhchen/zulip,dhcrzf/zulip,dattatreya303/zulip,cosmicAsymmetry/zulip,ahmadassaf/zulip,vaidap/zulip,sharmaeklavya2/zulip,hackerkid/zulip,aakash-cr7/zulip,PhilSk/zulip,zulip/zulip,souravbadami/zulip,shubhamdhama/zulip,niftynei/zulip,showell/zulip,j831/zulip,rishig/zulip,AZtheAsian/zulip,ahmadassaf/zulip,jainayush975/zulip,arpith/zulip,amyliu345/zulip,aakash-cr7/zulip,dawran6/zulip,TigorC/zulip,andersk/zulip,rishig/zulip,AZtheAsian/zulip,susansls/zulip,KingxBanana/zulip,Jianchun1/zulip,KingxBanana/zulip,vikas-parashar/zulip,joyhchen/zulip,zulip/zulip,sharmaeklavya2/zulip,j831/zulip,aakash-cr7/zulip,dawran6/zulip,andersk/zulip,brainwane/zulip,punchagan/zulip,PhilSk/zulip,ahmadassaf/zulip,Jianchun1/zulip,vabs22/zulip,mahim97/zulip,dhcrzf/zulip,ahmadassaf/zulip,synicalsyntax/zulip,verma-varsha/zulip,PhilSk/zulip,jainayush975/zulip,kou/zulip,rht/zulip,samatdav/zulip,KingxBanana/zulip,sup95/zulip,tommyip/zulip,AZtheAsian/zulip,synicalsyntax/zulip,Juanvulcano/zulip,isht3/zulip,mohsenSy/zulip,timabbott/zulip,hackerkid/zulip,timabbott/zulip,Galexrt/zulip,TigorC/zulip,krtkmj/zulip,dattatreya303/zulip,umkay/zulip,peguin40/zulip,KingxBanana/zulip,cosmicAsymmetry/zulip,dattatreya303/zulip,joyhchen/zulip,andersk/zulip,Juanvulcano/zulip,KingxBanana/zulip,shubhamdhama/zulip,calvinleenyc/zulip,eeshangarg/zulip,Galexrt/zulip,peguin40/zulip,jrowan/zulip,zacps/zulip,verma-varsha/zulip,Diptanshu8/zulip,christi3k/zulip,amyliu345/zulip,niftynei/zulip,showell/zulip,tommyip/zulip,showell/zulip,aakash-cr7/zulip,kou/zulip,brainwane/zulip,amyliu345/zulip,vabs22/zulip,mahim97/zulip,sup95/zulip,Galexrt/zulip,hackerkid/zulip,synicalsyntax/zulip,brainwane/zulip,verma-varsha/zulip,dhcrzf/zulip,TigorC/zulip,showell/zulip,paxapy/zulip,dhcrzf/zulip,paxapy/zulip,umkay/zulip,Juanvulcano/zulip,grave-w-grave/zulip,vaidap/zulip,paxapy/zulip,punchagan/zulip,grave-w-grave/zulip,jrowan/zulip,umkay/zulip,brainwane/zulip,jainayush975/zulip,aakash-cr7/zulip,j831/zulip,christi3k/zulip,Diptanshu8/zulip,paxapy/zulip,PhilSk/zulip,andersk/zulip,jphilipsen05/zulip,calvinleenyc/zulip,Jianchun1/zulip,zacps/zulip,dhcrzf/zulip,susansls/zulip,zulip/zulip,jphilipsen05/zulip,vikas-parashar/zulip,sup95/zulip,blaze225/zulip,vikas-parashar/zulip,niftynei/zulip,calvinleenyc/zulip,jrowan/zulip,rht/zulip,rishig/zulip,jainayush975/zulip,jrowan/zulip,susansls/zulip,susansls/zulip,vabs22/zulip,blaze225/zulip,souravbadami/zulip,sonali0901/zulip,cosmicAsymmetry/zulip,punchagan/zulip,zacps/zulip,isht3/zulip,punchagan/zulip,vaidap/zulip,cosmicAsymmetry/zulip,dhcrzf/zulip,rht/zulip,zacps/zulip,brockwhittaker/zulip,KingxBanana/zulip,krtkmj/zulip,vikas-parashar/zulip,AZtheAsian/zulip,souravbadami/zulip,JPJPJPOPOP/zulip,grave-w-grave/zulip,brainwane/zulip,eeshangarg/zulip,JPJPJPOPOP/zulip,tommyip/zulip,jackrzhang/zulip,TigorC/zulip,eeshangarg/zulip,zulip/zulip,verma-varsha/zulip,mohsenSy/zulip,brockwhittaker/zulip,kou/zulip,jackrzhang/zulip,sup95/zulip,krtkmj/zulip,brainwane/zulip,vaidap/zulip,vaidap/zulip,Galexrt/zulip,punchagan/zulip,christi3k/zulip,dawran6/zulip,SmartPeople/zulip,amanharitsh123/zulip,ryanbackman/zulip,mahim97/zulip,tommyip/zulip,rht/zulip,shubhamdhama/zulip,zulip/zulip,andersk/zulip,hackerkid/zulip,dattatreya303/zulip,zacps/zulip,jackrzhang/zulip,isht3/zulip,zacps/zulip,tommyip/zulip,isht3/zulip,peguin40/zulip,brockwhittaker/zulip,blaze225/zulip,amanharitsh123/zulip,synicalsyntax/zulip,peguin40/zulip,j831/zulip,rht/zulip,rishig/zulip,grave-w-grave/zulip,sharmaeklavya2/zulip,sharmaeklavya2/zulip,krtkmj/zulip,reyha/zulip,mohsenSy/zulip,rht/zulip,eeshangarg/zulip,joyhchen/zulip,SmartPeople/zulip,synicalsyntax/zulip,verma-varsha/zulip,mohsenSy/zulip,mahim97/zulip,Juanvulcano/zulip,rishig/zulip,eeshangarg/zulip,joyhchen/zulip,ryanbackman/zulip,arpith/zulip,paxapy/zulip,showell/zulip,joyhchen/zulip,AZtheAsian/zulip,mahim97/zulip,Diptanshu8/zulip,brockwhittaker/zulip,sharmaeklavya2/zulip,christi3k/zulip,synicalsyntax/zulip,christi3k/zulip,souravbadami/zulip,dhcrzf/zulip,amyliu345/zulip,umkay/zulip,krtkmj/zulip,ryanbackman/zulip,ahmadassaf/zulip,vabs22/zulip,brainwane/zulip,Jianchun1/zulip,kou/zulip,brockwhittaker/zulip,vabs22/zulip,vikas-parashar/zulip,susansls/zulip,PhilSk/zulip,jainayush975/zulip,showell/zulip,verma-varsha/zulip,zulip/zulip,vaidap/zulip,hackerkid/zulip,tommyip/zulip,jphilipsen05/zulip,hackerkid/zulip,amyliu345/zulip,shubhamdhama/zulip