add: logging capabilities + log-level flag #36

	name: sha-checker

	on:
	pull_request:
	types: [labeled, unlabeled, opened, reopened, synchronize]
	workflow_dispatch:
	jobs:
	check:
	runs-on: ubuntu-latest
	permissions:
	contents: read
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Check if files included in appropriately labeled PRs
	run: \|
	# Get PR number
	PR_NO=$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")
	echo "PR number: $PR_NO"

	# Get PR labels
	labels="$(gh api repos/${DOWNSTREAM}/pulls/$PR_NO --jq '.labels.[].name')"
	echo "$labels"

	# Check for exclusive label to continue operations
	if [[ $labels =~ (EXCLUSIVE LABEL) ]]; then
	echo "Label found. Continuing..."
	else
	echo "Label not found. No sha-checker needed."
	exit 0
	fi

	# Get changed files
	files="$(gh pr view "$PR_NO" --json files -q '.files[].path')"
	echo "$files"

	# Check if '.lastcommsha' among changed files
	if [[ $files =~ (.lastcommsha) ]]; then
	echo "File found."
	exit 0
	else
	echo "File not found. Please make sure you update the sha within '.lastcommsha'."
	exit 1
	fi

	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	UPSTREAM: "tock/tock"
	DOWNSTREAM: "WyliodrinEmbeddedIoT/tockloader-rs"

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