add badge

- repositories
- pull requests
add badge
fix: add missing semicolon
add basic auth in github service
add github account to env variables
add badge comment on new pull request
basic svg done, needs to feed some data
add data to pull request badge
add tests for pull request badge comment
refactoring and new tests
remove repo scoped badge

only for now, it can be readded easily
Merge pull request #336 from reviewninja/feature/badge

add badge