docs: add Document Loader docs #81

	# Copyright 2024 Google LLC
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
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	name: Lint
	on:
	pull_request:
	paths-ignore:
	- "*.md"
	pull_request_target:
	types: [labeled]
	paths-ignore:
	- "*.md"

	jobs:
	lint:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true
	# run job on proper workflow event triggers (skip job for pull_request event from forks and only run pull_request_target for "tests: run" label)
	if: "${{ (github.event.action != 'labeled' && github.event.pull_request.head.repo.full_name == github.event.pull_request.base.repo.full_name) \|\| github.event.label.name == 'tests: run' }}"

	steps:
	- name: Checkout Repository
	uses: actions/checkout@v3

	- name: Setup Python
	uses: actions/setup-python@0a5c61591373683505ea898e09a3ea4f39ef2b9c # v5.0.0
	with:
	python-version: "3.11"

	- name: Install requirements
	run: pip install -e .[test]

	- name: Run linters
	run: \|
	black --check .
	isort --check .

	- name: Run type-check
	run: mypy .

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