Add BlacklistAwareVideoDecoderFactory

[kanat]

🎯 Goal

Slack:

• https://getstream.slack.com/archives/C04MA3MMLBB/p1728653632248559

This PR includes 3 changes:

• it adds BlacklistAwareVideoDecoderFactory to fix the issue with decoding VP9 on exynos-related processors (for instance Google Pixel 7 uses exynos HW decoders)
• it add hooks for built-in users to login with app_key we need
• it fixes the absence of video for livestream calls

☑️Contributor Checklist

General

• I have signed the Stream CLA (required)
• Assigned a person / code owner group (required)
• Thread with the PR link started in a respective Slack channel (required internally)
• PR targets the develop branch
• PR is linked to the GitHub issue it resolves

Code & documentation

• Changelog is updated with client-facing changes
• New code is covered by unit tests
• Comparison screenshots added for visual changes
• Affected documentation updated (KDocs, docusaurus, tutorial)
• Tutorial starter kit updated
• Examples/guides starter kits updated (stream-video-examples)

☑️Reviewer Checklist

• XML sample runs & works
• Compose sample runs & works
• Tutorial starter kit
• Example starter kits work
• UI Changes correct (before & after images)
• Bugs validated (bugfixes)
• New feature tested and works
• Release notes and docs clearly describe changes
• All code we touched has new or updated KDocs

🎉 GIF

Please provide a suitable gif that describes your work on this pull request

[liviu-timar]

Wasn't able to test the sw decoder, as I don't have an appropriate phone:

I revived an old Samsung J6 phone with an Exynos chipset. It uses a hw decoder for VP8, but it switches to a sw decoder (libvpx) for VP9.

But:

• The demo app credentials changes work well, was able to login to a different env. 👍
• The layout change for audio/video calls in StreamCallActivity works. 👍