Implementing Model Selection, Env Variables and a Kill Switch

[aaronleggett96]

The following changes will:

1. Implement Model Selection as an input box when you first run the script
2. Use .env files rather than variables inside the babyagi.py file
3. Implement a killswitch to stop the script from running
4. Convert the Task Result from a list to a normal string for readability
5. Changed YOUR_TABLE_NAME to PINECONE_TABLE for readability and stored inside the .env file
6. Updated README.md accordingly + added in steps to create a virtual environment

[honeykjoule]

Would you make a separate PR for each contribution? It will be easier to evaluate and approve.

Especially interested in the kill switch if it solves #12 indefinite loop issue.

[francip]

Some of the changes here have been done elsewhere in a slightly different way. But the ability to stop, and the improvements to the embeddings should be picked. Can you resolve conflicts and see what is net new (and we should merge) and what is different implementation (and we can discuss if we want to switch)