Based on their path, we retrieve snippets assets, assuming that it will
be in the form : /snippets/{snippet_id}/{version}.{scss|js}
Then we check the template definition uses that version, or if any views
or html fields contains a snippet with such version exist.
If not, the asset is deactivated.
For that, we are looking for the data-snippet attribute in snippets
already dropped. For the template definition, we look at the first class
definition if a data version attribute is also defined.
task-2212216
closesodoo/odoo#73005
Signed-off-by: Romain Derie <rdeodoo@users.noreply.github.com>