Add --record-orientation

Add an option to store the orientation to apply in a recorded file.

Only rotations are supported (not flip), and most players correctly
handle it only for MP4 files (not MKV files).

app/data/bash-completion/scrcpy

@@ -62,6 +62,7 @@ _scrcpy() {
         -r --record=
         --raw-key-events
         --record-format=
+        --record-orientation=
         --render-driver=
         --require-audio
         --rotation=
@@ -117,6 +118,10 @@ _scrcpy() {
             COMPREPLY=($(compgen -> '0 90 180 270 flip0 flip90 flip180 flip270' -- "$cur"))
             return
             ;;
+        --record-orientation)
+            COMPREPLY=($(compgen -> '0 90 180 270' -- "$cur"))
+            return
+            ;;
         --lock-video-orientation)
             COMPREPLY=($(compgen -W 'unlocked initial 0 90 180 270' -- "$cur"))
             return