Added Pre Commit hook

[shreypandey]

Since parse_obj is deprecated by pydantic in favour of model_validate, changes the calls appropriately in lsp_client.py.

[shreypandey]

Added pre-commit hooks for the linting and test cases.
Fixes the issue #36

[yeger00]

Hi @shreypandey , thanks for your contribution
It looks good overall, I will take a deeper look at the evening.

[yeger00]

Do you know if there is an easy way to put the pre-commit as part of the CI?

[shreypandey]

@yeger00 Generally precommit hook is for local development. You can setup github actions which will get triggered with each PR.