feat: asset audit log metadata - WPB-20714

[johnxnguyen]

WPB-20714 [iOS] Upload asset with additional metadata

Issue

In this PR we include additional metadata when uploading assets if the asset audit log feature is enabled.

Changes include:

• adjust api for appending image messages to accept a SendableImage rather than Data. This allow us to include additional metadata about the image such as the name and utType (which we'll upload)
• unpack the necessary metadata and include it in the multipart data when uploading assets
• only upload this data under certain conditions (feature is enabled, not connected to cloud backend)
• delete dead code

Testing

1. Connect to backend that has asset audit log enabled
2. Send various asset messages (image, audio, video, file)
3. Observe the network via a proxy (e.g Proxyman) and check the upload contains the metadata in the raw body.

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Checklist

• Title contains a reference JIRA issue number like [WPB-XXX].
• Description is filled and free of optional paragraphs.
• Adds/updates automated tests.

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UI accessibility checklist

If your PR includes UI changes, please utilize this checklist:

• Make sure you use the API for UI elements that support large fonts.
• All colors are taken from WireDesign.ColorTheme or constructed using WireDesign.BaseColorPalette.
• New UI elements have Accessibility strings for VoiceOver.

[github-actions]

Test Results

   11 files  1 046 suites   14m 45s ⏱️
7 770 tests 7 742 ✅ 28 💤 0 ❌
7 772 runs  7 744 ✅ 28 💤 0 ❌

Results for commit 04e4835.

♻️ This comment has been updated with latest results.

[jullianm]

LGTM, nice work

[netbe]

I left some comments before approving

[netbe]

Looks good!