Fixed quite a bunch of issues with the old depot processing + more

[devedse]

• Don't store depots on disk anymore but rather just process them in memory
• Fixed an issue where I would overwrite another setting to store the version. This caused 2 issues:
  • An issue where it redownloaded the depot file every hour
  • Issues when you enabled Feature_SkipLinesBasedOnBytesRead and disabled Feature_DirectSteamIntegration.

[Copilot]

Pull Request Overview

This PR refactors depot processing by shifting from disk-based handling to in-memory processing and fixes issues where settings were being overwritten. Key changes include:

• Reformatting DbSetting initialization in SteamAppInfoService.
• Refactoring SteamDepotEnricherHostedService to process depot files from an in-memory stream.
• Updating SteamDepotDownloaderHostedService to remove disk file dependencies and adjust service registrations in Program.cs.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
DeveLanCacheUI_Backend/Services/SteamAppInfoService.cs	Reformatted setting initialization for improved readability.
DeveLanCacheUI_Backend/Services/OriginalDepotEnricher/SteamDepotEnricherHostedService.cs	Switched from file-based depot reading to in-memory stream processing and adjusted logging/statements.
DeveLanCacheUI_Backend/Services/OriginalDepotEnricher/SteamDepotDownloaderHostedService.cs	Removed disk file handling logic, replaced file I/O with direct processing, and introduced error handling improvements.
DeveLanCacheUI_Backend/Program.cs	Adjusted service registration for the depot enricher to support the new design.