Major refactor, including update to Java 21, new IntelliJ Gradle Plugin, single-workspace model, and Artemis4j 2.0 #14

	name: Format

	on:
	pull_request:
	branches: [ main ]
	workflow_dispatch:

	jobs:
	format:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Set up JDK 21
	uses: actions/setup-java@v4
	with:
	java-version: '21'
	distribution: 'temurin'
	- name: Build project with gradle
	uses: gradle/actions/setup-gradle@v4
	- name: Format with Spotless
	run: gradle spotlessApply
	- name: Commit changes
	uses: stefanzweifel/git-auto-commit-action@v5
	with:
	commit_message: Apply formatting changes

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