chore: add sonar property files (#35)

Author: ReenigneArcher

.sonarcloud.properties

@@ -0,0 +1,6 @@
+# This file is used by automatic analysis in sonarqube cloud. Automatic analysis ignores sonar-project.properties.
+# https://docs.sonarsource.com/sonarqube-cloud/analyzing-source-code/automatic-analysis#additional-analysis-configuration
+
+sonar.exclusions=third-party/**
+
+sonar.cfamily.reportingCppStandardOverride=c++17

sonar-project.properties

@@ -1,5 +1,8 @@
 # Sonar project analysis properties overrides
+# Automatic analysis ignores this file, and uses .sonarcloud.properties instead
+
 sonar.projectKey=LizardByte_lizardbyte-common
 
-# support the oldest standard used in lizardbyte projects
+sonar.exclusions=third-party/**
+
 sonar.cfamily.reportingCppStandardOverride=c++17