ENYO-1887: DO NOT MERGE Add filter feature for the components palette of the designer (wait for ENYO-3241)

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-1887

Add components palette filtering feature. The filter can be reseted by clicking on the related text input icon.

DO NOT MERGE: Enyo version must be updated to pilot-8 or above (https://enyojs.atlassian.net/browse/ENYO-3241)

Enyo-DCO-1.1-Signed-off-by: Vincent HERILIER vincent.herilier@hp.com