update: .gitignore

Author: amirisback

.gitignore

@@ -39,4 +39,36 @@ bin/
 .vscode/
 
 ### Mac OS ###
-.DS_Store
+.DS_Store
+
+/.gradle
+.idea
+/local.properties
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+build
+/build
+/captures
+.externalNativeBuild
+
+built application files
+.apk
+.ap_
+
+files for the dex VM
+*.dex
+
+Java class files
+*.class
+
+generated files
+gen/
+.externalNativeBuild/
+
+Local configuration file (sdk path, etc)
+local.properties
+app/version.properties
+
+# SonarQube
+.sonar/