Add Ring camera integration

[seydx]

Added Ring camera integration that allows users to connect their Ring cameras. Users can authenticate either via email/password (including 2FA support) or by providing a refresh token. (see below)

After successful authentication, all available Ring cameras are displayed with their corresponding source configuration (ring:?device_id=XXX&refresh_token=XXX). These source configurations can then be used to add individual Ring cameras to go2rtc, which handles the WebRTC connection to stream the camera feed. Two-Way audio is also supported.

A separate producer was added for snapshot endpoints (ring:?device_id=XXX&refresh_token=XXX&snapshot) to directly obtain a snapshot from the Ring API

The Ring integration implementation is based on the ring-client-api library

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Question: When making requests to Ring's API, sometimes a new refresh token is returned. What would be the best approach to handle and persist these updated refresh tokens in go2rtc's configuration @AlexxIT ?

Regarding to ring-client-api wiki, it is only important for push notification, which is not used here..

@ring-client-api
It may seem possible to simply re-use the initially generated token multiple times, and indeed it will generally work for authentication even if newer tokens are not saved...

[AlexxIT]

Thanks! You can safely change config yaml, like HomeKit integration do it for pairings:

go2rtc/internal/homekit/api.go

Lines 98 to 107 in fc02e6f

	func apiPair(id, url string) error {
	conn, err := hap.Pair(url)
	if err != nil {
	return err
	}
	streams.New(id, conn.URL())
	return app.PatchConfig(id, conn.URL(), "streams")
	}