Add support for SonarCloud analysis

sonar-project.properties

@@ -0,0 +1,18 @@
+# https://about.sonarcloud.io/get-started/ 
+# Run the SonarCloud tools with the follow parameters:
+# Run in the cmake build directory after cmake: build-wrapper-[platform]-x86-64 --out-dir bw-output make clean all
+# Run in the project root directory: sonar-scanner.bat -Dsonar.cfamily.build-wrapper-output=build/bw-output -Dsonar.cfamily.gcov.reportsPath=build -Dsonar.login=[AUTH_TOKEN]
+
+# required metadata
+sonar.projectKey=keepassxc
+sonar.organization=droidmonkey-github
+sonar.projectName=keepassxc
+sonar.host.url=https://sonarcloud.io
+  
+# path to source directories (required)
+sonar.sources=src
+sonar.tests=tests
+
+sonar.cfamily.threads=2
+
+sonar.exclusions=**/zxcvbn/*