Auto-orient images and preserve encoder options

[JimBobSquarePants]

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Description

Fix #304
Fix #375
Fix #381

This pull request enhances the handling and demonstration of image metadata and orientation in the ImageSharp.Web sample project, and improves default middleware behavior for web image processing. The main focus is on ensuring correct display of images with ICC profiles and EXIF orientation, especially for WEBP images. It also introduces automatic EXIF orientation correction for WEBP images and expands sample coverage.

Sample and Documentation Improvements:

• Added a new section in Index.cshtml demonstrating EXIF auto-orientation for WEBP images, including a new sample image Exif5-1x.webp to visually verify correct orientation handling. [1] [2]
• Updated the ICC Profiles section in Index.cshtml to clarify that ICC profiles are converted to sRGB by default, and adjusted sample image widths for improved display.

Middleware and Processing Enhancements:

• Modified ImageSharpMiddlewareOptions so that the auto-orient command is automatically injected for images if not already present, ensuring correct orientation in browsers that ignore WEBP EXIF orientation.
• Updated QualityWebProcessor to copy additional encoding options (Progressive, ProgressiveScans, RestartInterval) from the reference image, allowing for more accurate and flexible image encoding.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86%. Comparing base (338c719) to head (790a2b1).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #397   +/-   ##
===================================
  Coverage    86%    86%           
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  Files        83     83           
  Lines      2438   2453   +15     
  Branches    365    366    +1     
===================================
+ Hits       2103   2119   +16     
+ Misses      224    223    -1     
  Partials    111    111           

Flag	Coverage Δ
unittests	86% <100%> (+<1%)	⬆️

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