Add github actions

- Updated gradle wrapper to 6.7.1
- Added .gitignore

.github/workflows/gradle.yml

@@ -0,0 +1,31 @@
+# This workflow will build a Java project with Gradle
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+
+name: Java CI with Gradle
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+    - name: Build with Gradle
+      run: ./gradlew build
+    - name: Upload artififacts
+      uses: actions/upload-artifact@v2.2.1
+      with:
+        name: ServerUtils
+        path: build/libs/*-all.jar

.gitignore

@@ -0,0 +1,6 @@
+.idea/
+.vs/
+.gradle/
+build/
+*.class
+*.jar

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 #Mon Jun 01 13:25:07 CEST 2020
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists