* add support for handling preprocessors in the backend
* add preprocessor tests
* use uppercase for constants
* add super label component
* remove error message from query editor since its not working (probably cause onDataError doesnt work anymore)
* use cheat sheet instead of help
* add return type annotation for projects
* add support for preprocessing. replace segment comp with select. change components names and refactoring
* cleanup
* more pr feedback
* fix annotations editor
* rename aggregation component
* fix broken test
* remove unnecessary cast
* fix strict errors
* fix more strict errors
* remove not used prop
* update docs
* use same inline label for annotation editor
* fix react prop warning
* disable preprocessing for distribution types
* using new default values for reducer
* auto select 'rate' if metric kind is not gauge
* fix create label format
* pr feedback
* more pr feedback
* update images
