Add a CI job that just does `./gradlew assemble` #8

	name: "Validate Gradle Wrapper"
	on: [push, pull_request]

	permissions:
	contents: read

	jobs:
	validation:
	name: "Validation"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 1
	show-progress: false
	- uses: gradle/wrapper-validation-action@v1

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