Merge branch 'mwaw/add_snowplow_event_definition_to_giet_generator' into 'master'

Add event definitions at GIET generator

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/120616



Merged-by: Mehmet Emin INAC <minac@gitlab.com>
Approved-by: Mehmet Emin INAC <minac@gitlab.com>
Approved-by: Michał Wielich <mwielich@gitlab.com>
Reviewed-by: Michał Wielich <mwielich@gitlab.com>
Reviewed-by: Mikołaj Wawrzyniak <mwawrzyniak@gitlab.com>
Reviewed-by: Mehmet Emin INAC <minac@gitlab.com>
Co-authored-by: Mikolaj Wawrzyniak <mwawrzyniak@gitlab.com>
Co-authored-by: Michał Wielich <mwielich@gitlab.com>