[es] don't try/except on index creation, now only used in ccplugin and scripts, fail hard so we can see the index settings errors

[optimisation] cwuri need to be in RQL, otherwise it *really* slows down the indexing when cw accesses entity.cw_uri.

Update using entity.cw_attr_cache should be enough, no need to loop over attributes again

eid is already selected via 'V is `Etype`'

Also : ccplugin - generator serves all actions, not split up by type
       es.py - add CUSTOM_ATTRIBUTES mechanism

`indexable_attributes` in yams return only String and Bytes