Adds logs and analytics events with time measurements for the different stages of conference.init execution.

It was possible that join can be executed before conference.init have even started or we haven't reached the point ot create the initialGUMPromise. This was causing the following issues:
 - users stuck on the prejoin screen
 - participants join 2+ times in the call (we have been creating more than 1 local participants from a single page).

Remove unnecessary ts-ignores
Remove unnecessary eslint-disable
Fix type errors
Change Dispatch type to IStore['dispatch']

It gets bundled on mobile for no reason otherwise.

Use new TS config from @jitsi/eslint
Fix all lint errors

* Additional setting to order participants in speaker stats #9742

* Setting to order speaker stats optimisations #9742

* Lint fixes #9742

* Replace APP references #9742

* Lint fixes #9742

* Setting to order speaker stats optimisations 2 #9742

* Lint fixes #9742

* Remove unnecessary param #9742

* Add more speaker-stats reducer _updateStats docs  #9742

It does a more elaborate way of textarea copying, hopefully it's more reliable.

There are just a couple of logs in this feature, and it's included in bundles
like external_api, which would bloat it due to cascaded dependencis.

React Native doesn't define __filename nor __dirname so do it artisanally. In
addition, this helps with centralizing the configuration passed to loggers.

Using anything non-serializable for action types is discouraged:
https://redux.js.org/faq/actions#actions

In fact, this is the Flow definition for dispatching actions:

declare export type DispatchAPI<A> = (action: A) => A;
declare export type Dispatch<A: { type: $Subtype<string> }> = DispatchAPI<A>;

Note how the `type` field is defined as a subtype of string, which Symbol isn’t.

* feat(analytics): move to React

The analytics handlers have been moved to JitsiMeetGlobalNS, so now they are
stored in `window.JitsiMeetJS.app.analyticsHandlers`.

The analytics handlers are re-downloaded and re-initialized on every
lib-jitsi-meet initialization, which happens every time the config is changed
(moving between deployments in the mobile app).

* Adds legacy support for old analytics location.