Add github build and release workflow

.github/workflows/build.yml

@@ -0,0 +1,34 @@
+name: Build
+
+on: push
+
+jobs:
+  test-and-build:
+    strategy:
+      matrix:
+        include:
+          - platform: windows-latest
+            binary_name: Baka-*.exe
+            output_name: Baka.exe
+
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK
+        uses: actions/setup-java@v2
+        with:
+          java-version: '22'
+          distribution: 'adopt'
+
+      - name: Build artifact
+        shell: bash
+        run: |
+          ./mvnw compile javafx:jlink jpackage:jpackage
+
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.output_name }}
+          path: ./target/dist/${{ matrix.binary_name }}

.github/workflows/release.yml

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+name: Publish release
+
+on:
+  workflow_run:
+    workflows: [Build]
+    branches: [v**]
+    types: [completed]
+
+jobs:
+  publish-release:
+    runs-on: ubuntu-latest
+    # Kinda bad since it might release on any branch starting with v, but it'll do for now.
+    # Tag filtering in "on:" doesn't work, since the inital build trigger gets lost.
+    # github.ref is therefore also being reset to "refs/head/master".
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+
+    steps:
+      - name: Download windows artifact
+        uses: dawidd6/action-download-artifact@v3
+        with:
+          workflow: build.yml
+          name: Baka.exe
+
+      - name: Create release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: ${{ github.event.workflow_run.head_branch }}
+          tag_name: ${{ github.event.workflow_run.head_branch }}
+          files: |
+            Baka.exe