[FEATURE] sap.ui.commons.ColorPicker: Introduce F6 handling

Change-Id: Ia56b375c2f378792ba36a7566f6d72a28ce8540d
[INTERNAL] P13nColumnsPanel - filterItems

- the search does look into the whole item text /tooltip to identify an
entered search phrase instead of searching only from the beginning

Change-Id: I076a0054ca6aa0f94821f07a6ea00bd52fd23fd6
Merge "[INTERNAL] P13nColumnsPanel - filterItems"
Merge "[FEATURE] sap.ui.commons.ColorPicker: Introduce F6 handling"