Add sectioned contributor system with per-project tracking

- Rename workflow to update-contributors.yml (more generic name)
- Add generate_main_readme.py to create sectioned contributor table
- Update main README with sections: Book, TinyTorch, Kits, Labs
- Add contribution type badges (emojis) to contributor entries
- Add Marcelo Rovai to kits contributors
- Update workflow to handle all project contributor files

kits/.all-contributorsrc

@@ -13,6 +13,18 @@
     "linkToUsage": false,
     "skipCi": true,
     "contributors": [
+        {
+            "login": "Mjrovai",
+            "name": "Marcelo Rovai",
+            "avatar_url": "https://avatars.githubusercontent.com/Mjrovai",
+            "profile": "https://github.com/Mjrovai",
+            "contributions": [
+                "doc",
+                "code",
+                "design",
+                "tutorial"
+            ]
+        },
         {
             "login": "profvjreddi",
             "name": "Vijay Janapa Reddi",

kits/README.md

@@ -142,6 +142,7 @@ Thanks to these wonderful people who helped improve the hardware kits ([emoji ke
 <table>
   <tbody>
     <tr>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/Mjrovai"><img src="https://avatars.githubusercontent.com/Mjrovai?v=4?s=80" width="80px;" alt="Marcelo Rovai"/><br /><sub><b>Marcelo Rovai</b></sub></a><br />📖 💻 🎨 ✅</td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/profvjreddi"><img src="https://avatars.githubusercontent.com/profvjreddi?v=4?s=80" width="80px;" alt="Vijay Janapa Reddi"/><br /><sub><b>Vijay Janapa Reddi</b></sub></a><br />🐛 💻 🎨 📖 🧪 🔧</td>
     </tr>
   </tbody>
@@ -159,13 +160,6 @@ Thanks to these wonderful people who helped improve the hardware kits ([emoji ke
 
 ---
 
-## Authors
-
-- **Marcelo Rovai** - Primary author
-- **Vijay Janapa Reddi** - Harvard University
-
----
-
 ## License
 
 Content is licensed under **Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International** (CC BY-NC-SA 4.0).