Add automatically update upstream workflow #6

	name: Build Leaf 1.20.4
	on: [ push, pull_request ]
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@main
	- uses: gradle/wrapper-validation-action@main
	- name: Set up JDK
	uses: graalvm/setup-graalvm@main
	with:
	java-version: 17
	github-token: "${{ secrets.GITHUB_TOKEN }}"
	cache: gradle

	- name: Grant execute permission for gradlew
	run: chmod +x gradlew
	- name: Configure Git
	run: git config --global user.email "no-reply@github.com" && git config --global user.name "Github Actions"

	- name: Apply patches
	run: ./gradlew -Dorg.gradle.jvmargs="-Dgraal.CompilerConfiguration=enterprise -Dgraal.UsePriorityInlining=true -Dgraal.Vectorization=true -Dgraal.OptDuplication=true --add-modules jdk.incubator.vector" applyPatches --stacktrace --no-daemon
	- name: Create ReobfPaperclipJar
	run: ./gradlew -Dorg.gradle.jvmargs="-Dgraal.CompilerConfiguration=enterprise -Dgraal.UsePriorityInlining=true -Dgraal.Vectorization=true -Dgraal.OptDuplication=true --add-modules jdk.incubator.vector" createReobfPaperclipJar --stacktrace --no-daemon

	- name: Rename Paperclip Jar
	run: mv build/libs/Leaf-paperclip-1.20.4-R0.1-SNAPSHOT-reobf.jar ./leaf-1.20.4.jar

	- name: Release Leaf
	if: github.ref_name == 'ver/1.20.4'
	uses: marvinpinto/action-automatic-releases@master
	with:
	title: "Leaf 1.20.4"
	automatic_release_tag: "ver-1.20.4"
	repo_token: "${{ secrets.GITHUB_TOKEN }}"
	files: "./leaf-1.20.4.jar"
	prerelease: false

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