Implement new shortcut search list UI

1. Add an EditText for shortcuts search purpose.
2. Add new shortcut categories.
3. Create N to 1 shortcut mapping mechanism.
4. Fn based shortcuts shouldn't be showed.

Demo New UI: go/shortcutlist_demo

Flag: SHORTCUT_LIST_SEARCH_LAYOUT
Bug: 259352579
Test: manual and atest
Change-Id: I688365d5c408ba07b457eec66b3b5cc497390498