Tools & meta: add complex categories feature, update tools release, update READMEs #1694

	name: Kotlin Linter

	on: # yamllint disable-line rule:truthy
	workflow_dispatch:
	pull_request:

	jobs:
	ktlint:
	name: Lint Kotlin
	runs-on: ubuntu-latest
	steps:
	- name: Checkout files
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Get changed files
	id: changed-files
	uses: tj-actions/changed-files@e9772d140489982e0e3704fea5ee93d536f1e275
	with:
	files: "kotlin/*/.{kt,kts}"
	- 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 ktlint via curl
	if: steps.changed-files.outputs.any_changed == 'true'
	run: \|
	curl -sSLO https://github.com/pinterest/ktlint/releases/download/1.3.0/ktlint && chmod a+x ktlint && sudo mv ktlint /usr/local/bin/
	- name: Run ktlint
	if: steps.changed-files.outputs.any_changed == 'true'
	run: \|
	ktlint --reporter=plain?group_by_file --editorconfig=".github/linters/ktlint_config"
	continue-on-error: false

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