Use php-cs-fixer as within other extensions. Use same configuration. Apply configuration
In order to static analyze code and prevent bugs when changing code. Fix issues in most of the files.
* Add first basic CI with defaults. * Add ecs for coding guideline. * Fix invalid xliff files.
Add new record type partner. This can be something like a media partner or something else. Allow an event to have zero or more partner. Add necessary files and models with relations. Relates: #8092
