Before this commit when searching channels based on tags URLs were generated
like `/slides/all?tags=%5B4%5D`. This is not very clean, especially when
people share links.
In this commit we move to a slug-based URLs generation and support. URLs now
look like `/slides/all/tag/basics-1,gardening-2` which is more readable and
user friendly.
Support of all tags is maintained: `/slides/all?tags=%5B4%5D` still work
and display the same as `/slides/all/tag/basics-1,gardening-2` to ensure
links still work after applying this patch.
Along with this improvement this commit also improves the behavior of tags
for bot indexation. This is inspired by website_blog[1].
Task ID-2267840
Closes#53621
[1] - https://github.com/odoo/odoo/commit/0f2cada32319b3910d6ace6d412cfa94a646c9c7
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>