Add testBuild github action

.github/workflows/testBuild.yml

@@ -0,0 +1,31 @@
+name: Build & Publish
+
+on:
+  workflow_dispatch:
+    push:
+    branches:
+      - '1.20.1'
+    paths:
+      - 'common/**'
+      - 'fabric/**'
+      - 'forge/**'
+      - '**.gradle'
+      - '**.properties'
+
+
+jobs:
+  build_1_20_1:
+    name: Build 1.20.1
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'oracle'
+          java-version: 17
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: '1.20.1'
+      - name: Build
+        run: ./gradlew build --stacktrace