feat(views): add Tags management tool window

[CalvinAllen]

Description

Add a Tags tool window for managing Git tags, providing visibility into all tags with creation and deletion capabilities.

Features

Tag Display

• List all tags (local and remote)
• Tag type indicator (lightweight vs annotated)
• Tag message for annotated tags
• Associated commit information
• Creation date
• Tagger information (for annotated tags)

Tag Actions

• Create new tag (lightweight or annotated)
• Delete tag (local and/or remote)
• Push tag to remote
• Checkout tag (detached HEAD)
• Compare tag with current branch
• Compare two tags
• Copy tag name

Organization

• Sort by: name, date, version (semantic)
• Filter/search tags
• Group by: prefix, version major/minor
• Show/hide pushed tags

Visual Indicators

• Pushed/unpushed status
• Annotated vs lightweight icons
• Release tag highlighting
• Pre-release tag styling

Configuration Options

• Default sort order
• Version sorting mode (semantic, alphanumeric)
• Tag prefix patterns for grouping
• Auto-refresh setting

Related Issues

• feat(commands): add Git Command Palette #34 - Git Command Palette (provides alternative command-driven access to tag operations)
• feat(compare): add branch and tag comparison features #13 - Branch and tag comparison features (extends comparison capabilities)

Note: This tool window provides a rich visual interface for tag management. The same operations are also available via the Git Command Palette (#34) for users who prefer keyboard-driven workflows.

Acceptance Criteria

• All tags displayed with accurate information
• Tag creation works (both types)
• Tag deletion works locally and remotely
• Sorting and filtering function correctly
• Compare operations launch diff view