common: Add file sharing support

[thyal]

Description

Adds file sharing support.

Summary:

Related Issue:

Testing

1. pnpm build && pnpm dev
2. Go to the Room Connection With File Sharing story
3. join the room, try to share a file
4. Verify that you get the "Not in a room session" error (this is expected)
5. Join the same room from a different tab
6. Verify that file sharing works both from the storybook tab and the room tab (share files both ways)
7. Try with too many files > 10 and verify that it rejects with the error too_many_files
8. Try with an unsupported file type and verify that it rejects with the error unsupported_file_type

Screenshots/GIFs (if applicable)

Checklist

• My code follows the project's coding standards.
• Prefixed the PR title and commit messages with the service or package name
• I have written unit tests (if applicable).
• I have updated the documentation (if applicable).
• By submitting this pull request, I confirm that my contribution is made
  under the terms of the MIT license.

Additional Information

[changeset-bot]

🦋 Changeset detected

Latest commit: 0eb495d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@whereby.com/browser-sdk	Minor
@whereby.com/core	Minor
@whereby.com/media	Patch
@whereby.com/assistant-sdk	Patch
@whereby.com/react-native-sdk	Patch
@whereby.com/audio-denoiser	Patch

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[richtrwhereby]

Really nice, clean work here 💯

Tested and works for me. A couple of minor non-blocking comments to consider but LGTM and approved ✅