Add --list-camera-sizes

Add an option to list the device camera declared sizes.

PR #4213 <https://github.com/Genymobile/scrcpy/pull/4213>

app/src/options.h

@@ -183,6 +183,7 @@ struct scrcpy_options {
 #define SC_OPTION_LIST_ENCODERS 0x1
 #define SC_OPTION_LIST_DISPLAYS 0x2
 #define SC_OPTION_LIST_CAMERAS 0x4
+#define SC_OPTION_LIST_CAMERA_SIZES 0x8
     uint8_t list;
 };