Added codecov.yml and disable codecov comments
Added codecov.yml and disable codecov comments

[ci skip]
aleksandr-bakanov/astropy,pllim/astropy,dhomeier/astropy,dhomeier/astropy,saimn/astropy,pllim/astropy,astropy/astropy,stargaser/astropy,pllim/astropy,dhomeier/astropy,saimn/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,saimn/astropy,mhvk/astropy,mhvk/astropy,astropy/astropy,MSeifert04/astropy,bsipocz/astropy,astropy/astropy,stargaser/astropy,saimn/astropy,lpsinger/astropy,larrybradley/astropy,dhomeier/astropy,MSeifert04/astropy,larrybradley/astropy,StuartLittlefair/astropy,pllim/astropy,dhomeier/astropy,mhvk/astropy,saimn/astropy,bsipocz/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,bsipocz/astropy,larrybradley/astropy,lpsinger/astropy,astropy/astropy,stargaser/astropy,bsipocz/astropy,StuartLittlefair/astropy,stargaser/astropy,aleksandr-bakanov/astropy,mhvk/astropy,larrybradley/astropy,larrybradley/astropy,mhvk/astropy,astropy/astropy,lpsinger/astropy,lpsinger/astropy,StuartLittlefair/astropy,lpsinger/astropy,pllim/astropy,MSeifert04/astropy,MSeifert04/astropy