fix(devkit): add .riv to binary extension

[kopach]

*.riv is Runtime binary format for Rive app https://help.rive.app/runtimes/advanced_topics/format#runtime-format

[vercel]

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1 Skipped Deployment

Name	Status	Preview	Updated (UTC)
nx-dev	⬜️ Ignored (Inspect)	Visit Preview	Dec 23, 2024 10:53am

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 32d9aa7.

Command	Status	Duration	Result
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nx run-many -t check-imports check-commit check...	✅ Succeeded	1m 5s	View ↗
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nx-cloud record -- nx format:check --base=c7e27...	✅ Succeeded	24s	View ↗
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☁️ Nx Cloud last updated this comment at 2024-12-23 11:39:20 UTC

[kopach]

Hi there. @AgentEnder , could you, please take a look? this is 1 line change