Add Moonlight docs

[MichaIng]

MichaIng/DietPi#6303

Should contain:

• Links to supported streaming host software, most importantly the FLOSS Sunshine: https://github.com/LizardByte/Sunshine
• Link to Sunshine docs? E.g. here how I got it working without issues on Windows with the portable version: https://docs.lizardbyte.dev/projects/sunshine/en/latest/about/usage.html#windows
• Quick start instructions:

moonlight pair HOST # hostname or IP, can be omitted for auto-detection but this did not work in my case
# enter shown PIN on HOST web UI
moonlight stream -app Desktop HOST # Stream desktop as example

[mtekman]

On a windows machine, running cmd → cd C:\Program Files\Sunshine\; sunshine.exe -0 saves me from having to use the webui (in case of forgotten password), and allows you to enter a PIN directly into stdin

[MichaIng]

I started it via service according to docs:

cd /d "C:\Path\To\Sunshine\scripts"
install-service.bat

I tried it just double-clicking the sunshine.exe first, which did not work: The web UI was reachable but Moonlight could not detect. The -0 arg is required then?

Found /etc/moonlight.conf which allows to add the HOST, default app etc. There one can also define the A/V decoder. I see omx there (OpenMAX) as RPi decoder. This is probably the issue why it fails at least with 64-bit kernel, as this does not support OpenMAX (heading over to PR).

[MichaIng]

The config file /etc/moonlight.conf can be used to set default host, app, resolution etc, but it needs to be explicitly loaded:

moonlight /etc/moonlight.conf

Looks like it was made for running as service. I'll implement a service, service user and autostart option next week.

[MichaIng]

Done: bb561cf
@mtekman I btw found the magic button to exit streaming:
CTRL+ALT+SHIFT+Q: https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#keyboardmousegamepad-input-options