Use libopus encoder for devices that lack the official codec

[jmartinesp]

Type of change

• Feature
• Bugfix
• Technical
• Other :

Content

Try to detect if the OS has support for the Opus encoder, if it doesn't, use the bundled libopus one.

Motivation and context

See #7010 .

Tests

Testing this is probably impossible unless you're one of the few affected users. You could force the check to return true and verify that VoiceRecorderL is used instead, but that's not really helpful.

Tested devices

• Physical
• Emulator
• OS version(s): 11

Checklist

• Changes has been tested on an Android device or Android emulator with API 21
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/vector-im/element-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR
• If you have modified the screen flow, or added new screens to the application, you have updated the test UiAllScreensSanityTest.allScreensTest()

[bmarty]

LGTM, thanks!

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication