Add cicd and sonar

.drone.yml

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+---
+kind: pipeline
+type: docker
+name: Tests Coverage
+
+steps:
+  - name: Run Tests With Coverage
+    image: maven:3.8-openjdk-17-slim
+    environment:
+      SONAR_LOGIN:
+        from_secret: SONAR_TOKEN
+    commands:
+      - mvn clean verify sonar:sonar -s ./settings.xml
+trigger:
+  branch:
+    include:
+      - master
+  trigger:
+    event:
+      - push

settings.xml

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+<settings>
+	<pluginGroups>
+		<pluginGroup>org.sonarsource.scanner.maven</pluginGroup>
+	</pluginGroups>
+	<profiles>
+		<profile>
+			<id>sonar</id>
+			<activation>
+				<activeByDefault>true</activeByDefault>
+			</activation>
+			<properties>
+				<sonar.host.url>
+					https://sonar.filefighter.de
+				</sonar.host.url>
+				<sonar.login>${env.SONAR_LOGIN}</sonar.login>
+			</properties>
+		</profile>
+	</profiles>
+</settings>