Introduce MatrixRTCSession lower level group call primitive (#3663)

* Add hacky option to disable the actual calling part of group calls.

So we can try using livekit instead.

* Put LiveKit info into the `m.call` state event (#3522)

* Put LK info into state

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Update to the new way the LK service works

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

---------

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

* Send 'contentLoaded' event

As per comment, so we can start digging ourselves out of the widget
API hole we're currently in.

* Add comment on updating the livekit service URL

* Appease CI on `livekit` branch (#3566)

* Update codeowners on `livekit` branch (#3567)

* add getOpenIdToken to embedded client backend

Signed-off-by: Timo K <toger5@hotmail.de>

* add test and update comment

Signed-off-by: Timo K <toger5@hotmail.de>

* Merge `develop` into `livekit` (#3569)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: RiotRobot <releases@riot.im>
Co-authored-by: Florian Duros <florianduros@element.io>
Co-authored-by: Kerry <kerrya@element.io>
Co-authored-by: David Baker <dbkr@users.noreply.github.com>
Co-authored-by: Erik Johnston <erik@matrix.org>
Co-authored-by: Valere <bill.carson@valrsoft.com>
Co-authored-by: Hubert Chathi <hubertc@matrix.org>
Close IDB database before deleting it to prevent spurious unexpected close errors (#3478)
Fix export type `GeneratedSecretStorageKey` (#3479)
Fix order of things in `crypto-api.ts` (#3491)
Fix bug where switching media caused media in subsequent calls to fail (#3489)
fixes (#3515)
fix the integ tests, where #3509 etc fix the unit tests.
fix breakage on node 16 (#3527)
Fix an instance of failed to decrypt error when an in flight `/keys/query` fails. (#3486)
Fix `TypedEventEmitter::removeAllListeners(void)` not working (#3561)

* Revert "Merge `develop` into `livekit`" (#3572)

* Don't update calls with no livekit URL & expose method to update it instead

and generally simplify a bit: change it to a single string rather than
an array of structs.

* Fix other instances of passing focusInfo / livekit url

* Add temporary setter

* WIP refactor for removing m.call events

* Always remember rtcsessions since we need to only have one instance

* Fix tests

* Fix import loop

* Fix more cyclic imports & tests

* Test session joining

* Attempt to make tests happy

* Always leave calls in the tests to clean up

* comment + desperate attempt to work out what's failing

* More test debugging

* Okay, so these ones are fine?

* Stop more timers and hopefully have happy tests

* Test no rejoin

* Test malformed m.call.member events

* Test event emitting

and also move some code to a more sensible place in the file

* Test getActiveFoci()

* Test event emitting (and also fix it)

* Test membership updating & pruning on join

* Test getOldestMembership()

* Test member event renewal

* Don't start the rtc manager until the client has synced

Then we can initialise from the state once it's completed.

* Fix type

* Remove listeners added in constructor

* Stop the client here too

* Stop the client here also also

* ARGH. Disable tests to work out which one is causing the exception

* Disable everything

* Re-jig to avoid setting listeners in the constructor

and re-enable tests

* No need to rename this anymore

* argh, remove the right listener

* Is it this test???

* Re-enable some tests

* Try mocking getRooms to return something valid

* Re-enable other tests

* Give up trying to get the tests to work sensibly and deal with getRooms() returning nothing

* Oops, don't enable the ones that were skipped before

* One more try at the sensible way

* Didn't work, go back to the hack way.

* Log when we manage to send the member event update

* Support `getOpenIdToken()` in embedded mode (#3676)

* Call `sendContentLoaded()` (#3677)

* Start MatrixRTC in embedded mode (#3679)

* Reschedule the membership event check

* Bump widget api version

* Add mock for sendContentLoaded()

* More log detail

* Fix tests

and also better assert because the tests were passing undefined which
was considered fine because we were only checking for null.

* Simplify updateCallMembershipEvent a bit

* Split up updateCallMembershipEvent some more

* Typo

Co-authored-by: Daniel Abramov <inetcrack2@gmail.com>

* Expand comment

* Add comment

* More comments

* Better comment

* Sesson

* Rename some variables

* Comment

* Remove unused method

* Wrap updatecallMembershipEvent so it only runs one at a time

* Do another update if another one is triggered while the update happens

* Make triggerCallMembershipEventUpdate async

* Fix test & some missed timer removals

* Mark session manager as unstable

---------

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>
Signed-off-by: Timo K <toger5@hotmail.de>
Co-authored-by: Šimon Brandner <simon.bra.ag@gmail.com>
Co-authored-by: Timo K <toger5@hotmail.de>
Co-authored-by: Timo <16718859+toger5@users.noreply.github.com>
Co-authored-by: Daniel Abramov <inetcrack2@gmail.com>

spec/test-utils/webrtc.ts

@@ -485,6 +485,7 @@ export class MockCallMatrixClient extends TypedEventEmitter<EmittedEvents, Emitt
 
     public getRooms = jest.fn<Room[], []>().mockReturnValue([]);
     public getRoom = jest.fn();
+    public getFoci = jest.fn();
 
     public supportsThreads(): boolean {
         return true;