Add GitHub Actions workflow for publishing JAR to Maven

Author: TheMeinerLP

.github/workflows/publish.yaml

@@ -0,0 +1,30 @@
+name: Publish JAR
+
+on:
+  push:
+    branches:
+      - main
+      - 'release/*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
+      - name: Build with Gradle
+        run: ./gradlew build
+
+      - name: Publish to Maven
+        run: ./gradlew publish
+        env:
+          ONELITEFEATHER_MAVEN_USERNAME: ${{ secrets.ONELITEFEATHER_MAVEN_USERNAME }}
+          ONELITEFEATHER_MAVEN_PASSWORD: ${{ secrets.ONELITEFEATHER_MAVEN_PASSWORD }}

build.gradle.kts

@@ -32,6 +32,10 @@ publishing {
             } else {
                 uri("https://repo.onelitefeather.dev/onelitefeather-releases")
             }
+            credentials {
+                username = System.getenv("ONELITEFEATHER_MAVEN_USERNAME")
+                password = System.getenv("ONELITEFEATHER_MAVEN_PASSWORD")
+            }
             credentials(PasswordCredentials::class)
             authentication {
                 create<BasicAuthentication>("basic")