lib-jitsi-meet does not get polyfilled for es6 methods.
Using Array.prototype.find will cause breakages in older
browsers, like ie11. The quick fix for now is changing
the find call to be a for-loop. The long term fix will
be discussed soon.

* fix: Fixes version comparison.

* fix(BrowserCapabilities): Searching for the correct version from capabilitiesDB.

* fix(BrowserDetection): Remove unnecessary checks.

In order to include browser capabilities in RTCBrowserType I needed to
refactor RTCBrowserType.