chore: adds GHA. - Githubissues

[ ] I have made a material change to the repo (functionality, testing, spelling, grammar)
[ ] I have read the [Contribution Guide] and my PR follows them.
[ ] I updated my branch with the master branch.
[ ] I have added tests that prove my fix is effective or that my feature works
[ ] I have added necessary documentation about the functionality in the appropriate .md file
[ ] I have added in line documentation to the code I modified

Closes #

opentracing / opentracing-php