Add TileColorPicker to remove hardcoded tile state color

1. Remove hardcoded color qs_tile_tint_* in colors.xml
2. Add tint_color_selector.xml which uses colorForeground and alpha
to tint.
3. Use TileColorPicker to grab tile state colors from
tint_color_selector.xml and provide them to customTile and BatteryTile

Bug: 32592245
Test: make -j40 SystemUITests
Change-Id: Ie5fc828c3c6d4e1f192643592c034f462fae5313