v0.2.0 is up: Mannnyyy modifications

Major

1. Adding the webpage parsing functionality, with a new example to demonstrate it
2. Unifying the datatypes in the whole project to depend on the ones defined in the newly created datatypes.py
3. Add language as an argument to the generators and the prompts

Minor

1. Enabling mypy finally in the workflow
2. Updating the README
3. Updating the existing examples to work with poetry run instead of the current hack with adding the library to the sys path
4. Update the metadata of the package in pyproject.toml file.