feat: New Template Library (#7062)

## Summary

Implement the new design for template library

## Changes

- What
  - New sort option: `Popular` and  `Recommended`
  - New category: `Popular`, leverage the `Popular` sorting
  - Support add category stick to top of the side bar 
- Support template customized visible in different platform by
`includeOnDistributions` field

### How to make `Popular` and `Recommended` work

Add usage-based ordering to workflow templates with position bias
correction, manual ranking (searchRank), and freshness boost.

New sort modes:
- "Recommended" (default): usage × 0.5 + searchRank × 0.3 + freshness ×
0.2
- "Popular": usage × 0.9 + freshness × 0.1

## Screenshots (if applicable)

New default ordering:

<img width="1812" height="1852" alt="Selection_2485"
src="https://github.com/user-attachments/assets/8f4ed6e9-9cf4-43a8-8796-022dcf4c277e"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7062-feat-usage-based-template-ordering-2bb6d73d365081f1ac65f8ad55fe8ce6)
by [Unito](https://www.unito.io)

Popular category:

<img width="281" height="283" alt="image"
src="https://github.com/user-attachments/assets/fd54fcb8-6caa-4982-a6b6-1f70ca4b31e3"
/>

---------

Co-authored-by: Yourz <crazilou@vip.qq.com>
Co-authored-by: GitHub Action <action@github.com>

src/locales/en/main.json

@@ -873,7 +873,7 @@
     "noResultsHint": "Try adjusting your search or filters",
     "allTemplates": "All Templates",
     "modelFilter": "Model Filter",
-    "useCaseFilter": "Use Case",
+    "useCaseFilter": "Tasks",
     "licenseFilter": "License",
     "modelsSelected": "{count} Models",
     "useCasesSelected": "{count} Use Cases",
@@ -882,6 +882,7 @@
     "resultsCount": "Showing {count} of {total} templates",
     "sort": {
       "recommended": "Recommended",
+      "popular": "Popular",
       "alphabetical": "A → Z",
       "newest": "Newest",
       "searchPlaceholder": "Search...",