[IMP] http_routing: add cache on rewrite computation

Before this commit each url was processed each time, now with have a cache
with the path (withtout query string) as key on each worker.
It reduces drastically the time of the rewrite check on hot. (~10x)

closes odoo/odoo#54690

Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>