Invite Flow improvements

[michielbdejong]

From Matrix discussion this morning:
we could say the Invite Receiver OCM Server MAY announce that it supports the invite paste flow:

• in some place in the GUI the Invite Receiver can paste any string containing [...]token=<token>[...]from=<fqdn>[...]

and MAY announce that it support the invite redirect flow:

• at a discoverable URL, the Invite Receiver can land with [...]token=<token>[...]from=<fqdn>[...] in the URL query parameter

The Invite Sender OCM Server MAY include a WAYF link in the Invite Message that is similar to a Public Invite Flow page, except that:

• the Invite Receiver only needs to enter their OCM Server FQDN, not their full OCM Address
• there MAY be a shortlist or a search functionality available to help the Invite Receiver do this

[michielbdejong]

As an alternative to the [...]token=<token>[...]from=<fqdn>[...] format we also discussed the ocm-invite://<token>@<fqdn> format. Which shall we pick?

[michielbdejong]

Just on a call with @MahdiBaghbani now, we will implement the second one (ocm-invite://<token>@<fqdn>) in Nextcloud and then hope others will follow!