Migrate browser/BrowserCapabilities

[naman9271]

Overview

This PR migrates the BrowserCapabilities module from JavaScript to TypeScript. The migration includes type definitions, interface extensions, and the addition of new methods to enhance browser capability detection.

Major Changes

1. New Methods Added

• getOSVersion():
• _getIOSVersion():
• isIosBrowser():
• etc.

2. TypeScript Error Resolutions

• getting the type errors as they are not exist in their parent so I add them as any if it is not okay please guide what to assign their types
• (window.RTCRtpSender.prototype as any).createEncodedStreams))
• return typeof (navigator as any).getDisplayMedia === 'function'

Fixes #2637

[jitsi-jenkins]

Hi, thanks for your contribution!
If you haven't already done so, could you please make sure you sign our CLA (https://jitsi.org/icla for individuals and https://jitsi.org/ccla for corporations)? We would unfortunately be unable to merge your patch unless we have that piece :(.

[naman9271]

@saghul please review this PR