Consolidate stream files types into common workspace

[coderabbitai]

Context

This issue tracks the consolidation of stream files types that are currently duplicated between client and server components.

Related PR: #1289 - chore(webui): Move shared types to common workspace.
Discussion: #1289 (comment)

Problem

Currently there is duplication between:

• ExtractStreamResp interface in client/src/typings/query.ts
• StreamFileMetadataSchema in server/src/typings/stream-files.ts

The ExtractStreamResp interface has an incorrect _id field and duplicates functionality.

Proposed Solution

1. Move StreamFileMetadataSchema to common workspace
2. Update submitExtractStreamJob to use Static<StreamFileExtractionSchema> as props and return Static<StreamFileMetadataSchema>
3. Delete duplicate interface ExtractStreamResp from client
4. Delete server/src/typings/stream-files.ts (the type StreamFilesCollection = Collection<StreamFileMetadata> can be inlined as Collection<StreamFileMetadata> in the two places it's used)

Benefits

• Eliminates type duplication
• Ensures type consistency between client and server
• Follows the pattern established in PR refactor(webui): Move shared types to common workspace.  #1289 of moving shared types to common workspace

Requested by: @hoophalab
Referenced in: #1289 (comment)