Add Templates submenu to Code Editor populated from examples

[google-labs-jules]

Added a "Templates" submenu to the "Code Editor" folder in the dat.GUI controls.
Populated the submenu by fetching and parsing paths.txt to find files in src/main/examples.
Each template is added as a button that, when clicked, loads the code into the editor and executes it using the global Eval function.

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PR created automatically by Jules for task 7462273000911847330 started by @friuns2

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Note

Adds a Templates submenu under Code Editor that lists example files from paths.txt and loads/executes the selected template in the in-page editor.

• Editor/UI:
  • Adds a Templates submenu under the Code Editor dat.GUI folder in src/ts/world/World.ts.
  • Fetches paths.txt, filters src/main/examples files, and creates buttons per file.
  • On selection, loads file content into the editor (chat variant 1), updates via SetCode, and executes via Eval.
• Types:
  • Updates build/types/world/World.d.ts to include private addCodeEditorControls.
  • Adds build/types/vehicles/Vehicle.d.ts declarations.
• Build:
  • Adds build/sketchbook.min.js.LICENSE.txt.

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[friuns2]

store executed code in page 1

[friuns2]

store executed code in page 1

[google-labs-jules]

store executed code in page 1

I have updated the logic to execute the template code in variant 1 (Page 1) and switch to it, instead of overwriting the current variant.