feat: Option to generate pages using AI 🤖

[surajshetty3416]

demo.mp4

• Option create complete page using AI
• Option to edit block inline
• Specialised options like "Rewrite Text" and "Replace Image" will be available where it make sense

Usage

• Set a API key (get it from from openrouter https://openrouter.ai/keys) in Settings under "AI" tab
• Once you set the valid key, "Generate with AI" option will show up in the toolbar of the editor
• You can then prompt to create a page you like ✨

[codecov]

Codecov Report

❌ Patch coverage is 6.68790% with 293 lines in your changes missing coverage. Please review.
✅ Project coverage is 57.93%. Comparing base (bcaece0) to head (c11b38e).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
builder/ai_page_generator.py	0.00%	281 Missing ⚠️
builder/utils.py	55.55%	12 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #544      +/-   ##
===========================================
- Coverage    63.49%   57.93%   -5.56%     
===========================================
  Files           27       28       +1     
  Lines         2802     3105     +303     
===========================================
+ Hits          1779     1799      +20     
- Misses        1023     1306     +283     

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