configured mypy with django-stubs

[ritik33]

closes #103

Description

• [x] add mypy support in this project with the command poetry add mypy --group dev
• [x] add django-stubbs with the following command poetry add --group dev django-stubs[compatible-mypy]
• [x] add the following configuration to our pyproject.toml
• [x] enable mypy in our pre-commit settings

[tool.mypy]
plugins = ["mypy_django_plugin.main"]

[tool.django-stubs]
django_settings_module = "myproject.settings"

[codecov[bot]]

Codecov Report

Base: 76.05% // Head: 76.05% // No change to project coverage :thumbsup:

Coverage data is based on head (00ed4e1) compared to base (54567b5). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #135 +/- ## ======================================= Coverage 76.05% 76.05% ======================================= Files 22 22 Lines 426 426 ======================================= Hits 324 324 Misses 102 102 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CompanionshipCare). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=CompanionshipCare)

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