Consolidated PR for #109 to #112, #139, #135. #137, #138 #15

	name: Validate schemas

	on:
	push:
	branches: ["*"]
	pull_request:
	branches: ["*"]

	jobs:
	process-changed-files:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0 # OR "2" -> To retrieve the preceding commit.

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.10'

	- name: Get changed files
	id: changed-files
	uses: tj-actions/changed-files@v41
	# To compare changes between the current commit and the last pushed remote commit set `since_last_remote_commit: true`. e.g
	# with:
	# since_last_remote_commit: true

	- name: List all changed files
	env:
	ALL_CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
	run: \|
	for file in "$ALL_CHANGED_FILES"; do
	echo "$file was changed"
	done

	- name: Install dependencies
	run: pip install git+https://github.com/hed-standard/hed-python.git@develop

	- name: Run command on file list
	env:
	ALL_CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
	run: \|
	python tests/validate_schemas.py $ALL_CHANGED_FILES

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