feat(a11y): Globally improve accessibility for screen reader users

Remove global variables from files
Change type to interface

The copyText wrapper is used in the `showStartedRecordingNotification`
action, which is common for web and native. Provide a native
implementation so the right one is bundled.

It gets bundled on mobile for no reason otherwise.

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

Remove unnecessary ts-ignores
Change any to actual types
Fix eslint rule

In addition, replace the from with a div because they shouldn't be
nested.

Since we are no longer in a form, manually validate the password. This
was necessary regardless, because it was possible to bypass the digits
rule by pressing "add".

- add possibility to allow execution of the button's routine besides triggering
`toolbarButtonClicked` API event
- keep backwards compatibility
- get rid of `ToolbarButton`

* Make Jitsi WCAG 2.1 compliant

* Fixed password form keypress handling

* Added keypress handler to name form

* Removed unneccessary dom query

* Fixed mouse hove style

* Removed obsolete css rules

* accessibilty background feature

* Merge remote-tracking branch 'upstream/master' into nic/fix/merge-conflicts

* fix error

* add german translation

* Fixed merge issue

* Add id prop back to device selection

* Fixed lockfile

Co-authored-by: AHMAD KADRI <52747422+ahmadkadri@users.noreply.github.com>