Create Testing Boilerplate and Smoke Tests

[Linked-Liszt]

Build out some smoke tests and set up boilerplate to build more tests on top of.

[Linked-Liszt]

Also add basic documentation

[mcherukara]

Langchain Auto-evaluator for different chains : https://blog.langchain.dev/auto-evaluator-opportunities/

[Linked-Liszt]

TODO: Add previously written tests from #21 to boilerplate.