Tags page refactoring

[hiderr]

Summary

1. The PR focuses on improving the user experience for tag management workflow on Repo -> Tags page.
2. This PR introduces a new approach to toast notifications in the application by implementing a simplified hook-based solution for managing toasts.

Changes

1. Toast Notification System

• Refactored the toast notification system by adding a new useToastNotification hook
• Simplified the API to make toast management more straightforward
• Removed complex implementation details like toast ID tracking in favor of a simpler state-based approach

2. Branch Management

• Added a dedicated CreateBranchDialog component that uses the new toast notification system
• Updated branch creation flow to show success notifications with branch name
• Integrated branch creation dialog in relevant repository views

3. Tag Management

• Refactored the tag management system to use the new branch selector components
• Updated the tag creation dialog to work with the branch selector
• Improved error handling for tag operations

4. UX Improvements

• Added proper validation messages for branch and tag creation forms
• Improved success feedback through toast notifications
• Updated translations for branch/tag management operations

5. Code Organization

• Removed duplicate code by centralizing branch and tag creation logic
• Improved component reuse through new container patterns
• Added proper typings for all new components and APIs

UI Changes Screenshots

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[abhinavrastogi-harness]

please break this down into smaller PRs with more focused changes. this is untenable.