Testing mechanism

[kj3moraes]

I need to develop a testing strategy and coverage idea for the backend. In this testing, I need to

• test all the API routes
• test a simple query with the nl2sql mechanism

[kj3moraes]

This should also include a github action to run the test script on the backend as documented in the scripts/ directory. There should also be a Github action to deploy the server and then run tests on this deployment.

[kj3moraes]

I have now added a Test Github action that runs the tests