ci: restore workflows

Author: jamjet3

.github/workflows/ci.yml

@@ -0,0 +1,16 @@
+name: CI
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '21'
+      - run: chmod +x gradlew
+      - run: ./gradlew clean build --no-daemon

.github/workflows/release.yml

@@ -0,0 +1,28 @@
+name: Release
+on:
+  push:
+    tags:
+      - 'v*'
+permissions:
+  contents: write
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: '21'
+      - run: ./gradlew clean uberJar --no-daemon
+      - run: |
+          cd build/libs
+          sha256sum *.jar > checksums.txt
+      - uses: softprops/action-gh-release@v2
+        with:
+          generate_release_notes: true
+          files: |
+            build/libs/*.jar
+            build/libs/checksums.txt