Coverage: configure Sonarcube exclusions

Fix sonarcube configuration to correctly exclude everything that is not
run by the CI and therefore cannot have any coverage data.
Also exclude a bunch of auxiliary files that are part of the build
system or generic helper tools.

sonar-project.properties

@@ -13,8 +13,9 @@ sonar.cfamily.cpp23.enabled=true
 #sonar.sourceEncoding=UTF-8
 
 sonar.coverageReportPaths=../build/coverage.xml
-sonar.test=.
+sonar.tests=.
 # note: only add benchmarks starting with bm_ to be able to exclude bm-nosonar_ files
-sonar.exclusions=**/third_party/**/*,**/test/**/*,**/benchmarks/*
-sonar.test.inclusions=**/test/**/*,**/benchmarks/bm_*
+sonar.exclusions=**/third_party/**/*,**/test/**/*
+sonar.coverage.exclusions=devtools/**/*,docs/**/*,cmake/**,docker/**/*,patches/**/*,core/src/main.cpp,**/**_example.cpp,**/bm_test_helper.hpp
+sonar.test.inclusions=**/test/**/*,**/benchmarks/bm_*,bench/bm_*,
 sonar.cfamily.compile-commands=../build/compile_commands.json