WIP Relay Collect (feature: WebRTC relaying of Collect Element to a second Asterics)

[willwade]

!! Warning: Just an experiment. Not aligned with a issue. Possibly completely useless (overlaps to an extent with Matrix integration). See also https://github.com/AceCentre/collect-transfer-relay which this PR uses

What this does:

• We regularly have clients whose communication partner is deaf or is hard of hearing and/or needs large text
• We also see the need for children in school to "present" to a class their speech which may be symbolised or in written form. Or use aac as written AAC with a school Teaching assistant. In the latter approach an assistant has to copy down their writing or lean over their shoulder
• On some instances we have partners (eg carers) who speak in one language and don't understand the communication aid user

So what if

• We had a way of transmitting the collect element - either on every entry or when a user controls it to - to send this to another instance of asterics grid
• In this second instance you could have just a collect element. It could then act like "remote display".
• What if in this second instance it could do things like "auto-translate" or even symbolise in the communicatin partners own symbol system

This PR attempts to do this

• Go to settings -> Integrations -> Collect Transfer
• Add "wss://collect-transfer-relay-r6ol8.ondigitalocean.app/ws" as the Relay URL
• Generate a pairing token
• CLick Auto-send collects and Reconnect automatically

In a second Instance of this PR - maybe on your phone, Copy the pairing token and URL.
Edit a grid's collect element And set "Whose messages to display" to Both or Partner.

Type your message on The first instance - see it show in the second. You can now make this second one just a Collect element etc

Status

Currently uses WebRTC. This means a signalling server connects to the two clients but then communication is entirely peer to peer. No data is transmitted to the server. (Except if you have a TURN server involved - which you may need to do for locked down envrionments)
Im not sure I like the UX. Its messy.
I think it should show somewhere the person is transmitting.
It needs a bit of a security audit

[github-actions]

🎉 Beta deployment successful!: view the changes in live preview environment: https://gridbeta-github.asterics-foundation.org/willwade/feature-collect-transfer-relay/pr

[github-actions]

🎉 Beta deployment successful!: view the changes in live preview environment: https://gridbeta-github.asterics-foundation.org/willwade/feature-collect-transfer-relay/pr

[github-actions]

🎉 Beta deployment successful!: view the changes in live preview environment: https://gridbeta-github.asterics-foundation.org/willwade/feature-collect-transfer-relay/pr

[github-actions]

🎉 Beta deployment successful!: view the changes in live preview environment: https://gridbeta-github.asterics-foundation.org/willwade/feature-collect-transfer-relay/pr