[website] chore: Update webpack config, optimize assets and SEO

[OchiengPaul442]

Summary of Changes (What does this PR do?)

• Optimized assets by transferring all heavy assets to Cloudinary, significantly reducing load times.
• Implemented SEO enhancements across all Clean Air Forum pages for better search engine visibility.
• Converted the majority of large images to .webp format, the recommended format by Chrome for its balance of small size and high-quality output.
• Removed unused code sections for cleaner and more efficient codebase.
• Added comments for better code readability and maintainability.
• Transferred heavy video assets to Cloudinary for efficient storage and retrieval.
• Updated content
• included a thumbnail to the preview video on the hero section when its not fully loaded yet

Status of maturity (all need to be checked before merging):

• I've tested this locally
• I consider this code done
• This change ready to hit production in its current state

Screenshots (optional)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 57.49%. Comparing base (2371947) to head (6c4d7dd).
Report is 99 commits behind head on staging.

Additional details and impacted files

@@             Coverage Diff              @@
##           staging    #2020       +/-   ##
============================================
+ Coverage     7.90%   57.49%   +49.59%     
============================================
  Files          165       30      -135     
  Lines        11772      327    -11445     
  Branches         0       67       +67     
============================================
- Hits           930      188      -742     
+ Misses       10842      136    -10706     
- Partials         0        3        +3     

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[Baalmart]

thanks @OchiengPaul442