GM2 icon updates

(2nd of many)

Pushing this up to close out a few bugs and get these into rotation

- ic_qs_cancel (x icon)
- ic_delete & ic_screenshot_delete (trash cans)
- stat_sys_dnd, ic_qs_dnd, ic_dnd (dnd obviously)
- ic_mode_edit & ic_screenshot_edit (pencil)
- ic_feedback (feedback for app-crashing dialog)
- ic_signal_flashlight (qs flashlight)
- ic_headset & ic_headset_mic
- ic_help_actionbar (question mark in settings)
- ic_info_outline_24dp (SettingsLib info icon)
- ic_volume* (volume rocker icons)
- ringer + vibrate (volume rocker, status bar, qs)
- Global actions menu (restart, power, screenshot)
- settings icons

Test: visual
Bug: 74344964
Bug: 74418623
Fixes: 76150662
Fixes: 76150721
Change-Id: I4cd9959de0156074b0d1e2978163984f7b761671