* add Export AS CSV button to the Project BOM Entry tab
* added Export as CSV translation
* add service file for BOM exporter
* added controller for handling exporting project BOM data as CSV file
* added tests for Export as CSV controller and exporter code
* remove hierarchical paths from being exported in CSV to match datatable format
* Fixed message id
* Use stimulus functions to refer to stimulus controller
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Co-authored-by: Jan Böhmer <mail@jan-boehmer.de>