Merge pull request #9 from thc202/migrate-github-action

Migrate GitHub Action to new syntax

Author: psiinon

.github/main.workflow

@@ -0,0 +1,24 @@
+name: Release Add-On
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    name: Build and Release Add-On
+    runs-on: ubuntu-latest
+    steps:
+    - name: Actor Filter
+      uses: actions/bin/filter@3c0b4f0e63ea54ea5df2914b4fabf383368cd0da
+      with:
+        args: actor kingthorin psiinon thc202
+    - uses: actions/checkout@v1
+    - name: Build and Release Add-On
+      uses: docker://openjdk:8
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        entrypoint: ./gradlew
+        args: createReleaseFromGitHubRef