This commit refactors device selection (more heavily on iOS) to make it
consistent across platforms.

Due to its complexity I couldn't break out each step into separate commits,
apologies to the reviewer.

Changes made to device handling:

- speaker is always the default, regardless of the mode
- "Phone" shows as a selectable option, even in video call mode
- "Phone" is not displayed when wired headphones are present
- Shared device picker between iOS and Android
- Runtime device updates while the picker is open

Uses nullish coalescing and optional chaining.

They are in Stage 3 and are already dependencies or the React Native preset.

References:
https://babeljs.io/docs/en/babel-plugin-proposal-optional-chaining
https://babeljs.io/docs/en/babel-plugin-proposal-nullish-coalescing-operator

In case of hitting errors like max participant limit reached and when clicking hangup, the attempt to leave room second time results error and reload screen.

The store's remote tracks get cleared
and re-added when switching in and out
of p2p, which can cause pinning thrashing.
Avoid that with a debounce.

* Adds live streaming sound notification.

* Adds ios resources for the new files.

Fixes: https://github.com/jitsi/jitsi-meet/issues/4049

Bumps [jquery](https://github.com/jquery/jquery) from 3.3.1 to 3.4.0.
- [Release notes](https://github.com/jquery/jquery/releases)
- [Commits](https://github.com/jquery/jquery/compare/3.3.1...3.4.0)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.11 to 4.17.13.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](https://github.com/lodash/lodash/compare/4.17.11...4.17.13)

Signed-off-by: dependabot[bot] <support@github.com>

Use the width of its container as the size, so the font icons can be rendered at
a good size.

It's an evolution of audio-only mode, where we also allow for receiving a remote
screen-share.

Diving deeper: this basically sets last N to 1 or 0 depending on the
availability of a screen-share.

This prevents inserting any user overridden APP_NAME
values into html. A new translation key is being used
to immediately stop non-english languages from using the
problematic string.

Also tweaked the copy to remove the "eer" and fix
some grammar.

There is no need to display the native app name as
raw html.

This refactors all handling of audio-only and last N to 2 features in preparation
for "low bandwidth mode".

The main motivation to do this is that lastN is a "global" setting so it helps
to have all processing for it in a single place.

i18next.options are initialized before interfaceConfig overwrites are processed which leads to wrong translations.

* ref(feedback): emit api feedback submitted on completion

Compared to firing the event on submission because
the submission ajax will not be completed at that
time..

* squash: update package.json

The filmstrip is currently only hidden when PiP mode is entered. There is no
real reason not to leave the large view as it was.

When a participant is pinned in the UI we then proceed to mark it as selected on
the JVB. This will make the participant part of the last N set and will receive
the highest (or configured highest) video quality.

Pinning a participant at the JVB level just makes sure it will be part of the
last N set.

Since only one participant can be pinned in the UI, there is no point in pinning
it at the JVB level, since selecting it already achieved the same result.

Bumps LJM to 3c80587431.

Moves getCurrentConferenceUrl method to base/connection to allow reuse.
The new location is not ideal, but looks the best based on the imports
required (trying to avoid circular dependencies).

Support for the MediaStream constructor has been added to react-native-webrtc.