Add github building workflow

.github/workflows/build.yml

@@ -0,0 +1,39 @@
+name: Build
+on: [ push, pull_request ]
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    if: "!contains(github.event.head_commit.message, 'skip ci') && !contains(github.event.head_commit.message, 'ci skip')"
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Validate gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Setup java 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: 17
+          distribution: temurin
+          cache: gradle
+
+      - name: Set git identity
+        run: |
+          git config --global user.email "[email protected]"
+          git config --global user.name "Github Actions"
+
+      - name: Apply patches
+        run: ./gradlew applyPatches -Dpaperweight.debug=true --no-daemon
+
+      - name: Build reobfuscated paperclip jar
+        run: ./gradlew createReobfPaperclipJar -Dpaperweight.debug=true --no-daemon
+
+      - name: Upload reobfuscated paperclip jar
+        uses: actions/upload-artifact@v3
+        with:
+          name: CloudPlane-Artifacts
+          path: build/libs/CloudPlane-paperclip-*
+          if-no-files-found: error