Migrate Travis CI to github actions

[chaynteam]

Our travis integration is not currently working and we've decided not to fix it as Travis is proving challenging to fix and we don't want to migrate plans. To simplify our stack we want to migrate travis continuous integration to Github actions. Approach

• have a look at this quickstart guide https://docs.github.com/en/actions/quickstart
• create a new branch to work on
• replicate the steps in travis in github actions
• if you need help with storing secrets for github actions contact the team (@swetha-charles or @eleanorreem)
• note that we want the travis CI to run at the same point in the development flow (i.e. on pull request creation)
• Commit any changes to the branch and push up
• Comment on the ticket about the changes made and request reviews from the team (@swetha-charles or @eleanorreem)