feat: add ci

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: Java CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: "temurin"
+          java-version: "17"
+          cache: "maven"
+
+      - name: Build with Maven
+        run: mvn -B clean install
+

README.md

@@ -231,3 +231,7 @@ boolean valid = Validators.email("root@admin.local")
 mvn test
 ```
 
+## License
+
+MIT License. See `LICENSE`.
+

pom.xml

@@ -5,7 +5,7 @@
 
     <groupId>com.checkmate</groupId>
     <artifactId>checkmate</artifactId>
-    <version>1.0.0-SNAPSHOT</version>
+    <version>0.1.0</version>
     <name>CheckMate</name>
     <description>Small rule-based validation framework</description>