Add file progress bar and fix some additional bugs

[1Blademaster]

[Copilot]

Pull request overview

This PR adds a file download progress bar to the FTP functionality and fixes timeout handling for long-running operations. The progress bar provides real-time feedback showing bytes downloaded, total bytes, and percentage complete during file transfers.

• Added progress callback mechanism for file downloads with real-time updates via WebSocket
• Fixed timeout logic to reset on each response rather than using absolute timeout from operation start
• Implemented conditional timeout handling for directory listings based on path content

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
radio/app/endpoints/ftp.py	Adds progress_callback to emit real-time download progress via WebSocket
radio/app/controllers/ftpController.py	Implements progress callback in readFile, fixes timeout logic to reset on each response, adds path-based timeout configuration for listFiles
gcs/src/redux/slices/ftpSlice.js	Adds readFileProgress state and associated actions/selectors to track download progress
gcs/src/redux/middleware/socketMiddleware.js	Handles read_file_progress socket events and manages progress state cleanup on completion/error
gcs/src/redux/middleware/emitters.js	Resets progress state when initiating new file downloads
gcs/src/components/config/ftp.jsx	Displays progress bar UI with download statistics during file transfers

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[Kwash67]

lgtm