adds stream create video param to tus initiate

[bbbshah]

Description

stream.StreamInitiateTUSVideoUpload currently allows you create a video stream
for upload using TUS protocol. Due to lack of maxDurationSeconds, the streams
created (for direct_user=true) results in maxDurationSeconds= 14400 which
takes the video billing quota until the video is uploaded. This PR adds supports to
pass additional params MaxDurationSeconds and Expiry in TUSUploadMetadata
to add appropriate functionality to the newly created stream/video.

Has your change been tested?

Added unit test to verify expiry and maxDurationSeconds metadata values are
properly encoded. Manually tested these by making API calls to cloudflare api using
a test account and verifying these values are correctly set in newly created stream video.

Types of changes

What sort of change does your code introduce/modify?

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• This change is using publicly documented in cloudflare/api-schemas
  and relies on stable APIs.

[github-actions]

changelog detected ✅

[jacobbednarz]

support for this has landed in the public API, thanks for the PR!

[github-actions]

This functionality has been released in v0.87.0.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!