feat: add mypy as type checker, update code and add comment to reference #248

	name: Run Type Checks

	on: [pull_request]

	permissions:
	contents: write

	jobs:
	type-checker:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: "3.10"

	- name: Install Requirements
	run: \|
	sudo apt-get update &&
	pip install poetry &&
	poetry add mypy
	poetry lock &&
	poetry install &&

	- name: Run type checks
	run: poetry run mypy src --install-types --non-interactive --ignore-missing-imports --exclude "cli/templates"

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