KVMD 3.319: Display orientation options for H.264 stream

For the H.264 stream, there are now options to rotate the virtual screen.

Rotation is done in 90° increments. The toggles are in the System menu in the web UI.

To update:

# pikvm-update`

If this command is not available, please use:

# curl https://files.pikvm.org/update-os.sh | bash`