helpers: Add RESULT_SEVERITY
helpers: Add Result
output: Add Outputter
output: Add ConsoleOutputter
ANALYSER_KIND: Strip useless UNKNOWN kind
Analyser: Return value returned by run_analyser
Analyser: Codestyle fix
analysers: Add GlobalAnalyser
analysers: Add LocalAnalyser
analysers: Add GlobalAnalyserTest
analysers: Add LocalAnalyserTest
StringConverter: Strip comment down to relevant part