docs: add docs_create_missing_stubs
docs: add docs_create_missing_stubs

- compare directories in cmake/projects with files in docs/packages/pkg
  and create stub rst files for missing entries

akalsi87/hunter,caseymcc/hunter,shekharhimanshu/hunter,shekharhimanshu/hunter,stohrendorf/hunter,dan-42/hunter,ruslo/hunter,Knitschi/hunter,akalsi87/hunter,mchiasson/hunter,tatraian/hunter,dvirtz/hunter,dan-42/hunter,tatraian/hunter,ikliashchou/hunter,caseymcc/hunter,ikliashchou/hunter,madmongo1/hunter,tatraian/hunter,ruslo/hunter,xsacha/hunter,ErniBrown/hunter,dvirtz/hunter,RomanYudintsev/hunter,fwinnen/hunter,dmpriso/hunter,NeroBurner/hunter,dmpriso/hunter,vdsrd/hunter,pretyman/hunter,isaachier/hunter,madmongo1/hunter,vdsrd/hunter,RomanYudintsev/hunter,mchiasson/hunter,stohrendorf/hunter,shekharhimanshu/hunter,pretyman/hunter,NeroBurner/hunter,dmpriso/hunter,madmongo1/hunter,NeroBurner/hunter,ErniBrown/hunter,caseymcc/hunter,dan-42/hunter,xsacha/hunter,xsacha/hunter,stohrendorf/hunter,madmongo1/hunter,akalsi87/hunter,isaachier/hunter,dvirtz/hunter,Knitschi/hunter,ruslo/hunter,Knitschi/hunter,vdsrd/hunter,ikliashchou/hunter,ingenue/hunter,ruslo/hunter,ingenue/hunter,ingenue/hunter,pretyman/hunter,pretyman/hunter,ErniBrown/hunter,dan-42/hunter,NeroBurner/hunter,ikliashchou/hunter,fwinnen/hunter,fwinnen/hunter,xsacha/hunter,ingenue/hunter,RomanYudintsev/hunter,isaachier/hunter,ErniBrown/hunter,isaachier/hunter,mchiasson/hunter,mchiasson/hunter