Camera mode - allow resolution setting

[BryanQuigley]

Looking to add a setting to set a resolution lower then the native default. Taking a look at the code it seems do-able as the QR bit limits the resolution - here.

The bigger question (in my mind) is what settings make sense to expose. A quick test has me coming up with the following for a very simple picture.
2.1MP1080 × 1920 - 192 KB
4.1MP1512 × 2688 - 314.4 KB
8.3MP2160 × 3840 - 534.8 KB
12.5MP3072 × 4080 (native for pixel 8) - 783.2 KB

I've had native resolution for a single picture go up to 10MB, my goal is to save space mostly by limiting it to a resolution I'll actually use .

Could be any of the following additional settings

• explicit 8MP option
• reduced resolution option that is relative to the native resolution, so maybe a 2/3rds and 1/3 option