core (tools/common): template renderer first draft: jinja integration is being rewritten to be used not only in Libervia, this is a first step which put the renderer in backend/frontends tools. The renderer is mainly HTML oriented, but may be used for other files. sat_templates dependency is needed to use it.

# FIXME: remove this when RSM and MAM are in wokkel
# XXX: the Monkey Patch is here and not in src/__init__ to avoir issues with pyjamas compilation
import wokkel
from sat.tmp.wokkel import pubsub as tmp_pubsub, rsm as tmp_rsm, mam as tmp_mam
wokkel.pubsub = tmp_pubsub
wokkel.rsm = tmp_rsm
wokkel.mam = tmp_mam