Add more information to zipmod list and properties

[ManlyMarco]

No description provided.

[Copilot]

Pull Request Overview

This PR enhances the sideloader viewer UI with a resizable split container layout and improves property display for mod metadata. The key changes include restructuring the UI for better flexibility, adding a new column for content type, and improving the browsability of manifest data in property grids.

• Replaces fixed layout with nested split containers for resizable panels
• Adds ContentsKind column to display mod content types
• Enhances property grid display with TypeConverters and ToString methods

Reviewed Changes

Copilot reviewed 5 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
SideloaderViewer.resx	Updates UI layout metadata to use split containers instead of fixed docking
SideloaderViewer.Designer.cs	Adds splitContainer1 and splitContainer2 controls with proper initialization
SideloaderModsWindow.resx	Adds ContentsKind column metadata and reorders existing column properties
SideloaderModsWindow.Designer.cs	Implements the new olvColumnContentType column in the object list view
SideloaderModInfo.cs	Removes [Browsable(false)] from Manifest property to show it in property grid
MigrationInfo.cs	Adds ReadOnly attribute and ToString method for better property grid display
Manifest.cs	Adds TypeConverter attributes and [Browsable(false)] to ManifestDocumentRoot

Files not reviewed (2)

• src/KKManager/Windows/Content/SideloaderModsWindow.Designer.cs: Language not supported
• src/KKManager/Windows/ToolWindows/Properties/Viewers/SideloaderViewer.Designer.cs: Language not supported

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