extract terms in correct folder
If two addons path have a common part in the folder name (e.g. `/home/alice/dev`
and `/home/alice/devodoo`), the `get_module_from_path` method may match the
wrong folder.
A file `/home/alice/devodoo/bob/models.py` would wrongly match `/home/alice/dev`
path (due to the lack of separator) and the returned module would be `odoo`
(`"odoo/bob/models.py".split('/')[0]`).
In such scenario, the translations of files (code, static folder, report) would
not be included in the exported translation file.
Force the module path to ends with a folder separator to avoid wrong matching.
Closes#13363
295f62741d