ATOM-13512 Altering IBL ImageProcessor .preset Does Not Force Assets to Rebuild (#5639)

Changes include:
- Move config files from ImageProcessingAtom/Config/ folder to ImageProcessingAtom/Assets/Config/ folder so it can be watched as source depencies.
- Change GetSuggestedPreset function so it can return certain preset for certain file name.
- Move file mask mappings from preset to ImageBuilder.settings. But the file masks in preset can still be used.
- Changed from using project config folder's imageBuilder.Settings for override to using it as json merge patch.
- Expose GetFileHash function in AssetBuilderSDK api.


Signed-off-by: Qing Tao <55564570+VickyAtAZ@users.noreply.github.com>

Gems/Atom/Asset/ImageProcessingAtom/Code/Source/Processing/ImageObjectImpl.cpp

@@ -183,10 +183,9 @@ namespace ImageProcessingAtom
             return EAlphaContent::eAlphaContent_Absent;
         }
 
-        //if it's compressed format, return indeterminate. if user really want to know the content, they may convert the format to ARGB8 first
         if (!CPixelFormats::GetInstance().IsPixelFormatUncompressed(m_pixelFormat))
         {
-            AZ_Assert(false, "the function only works right with uncompressed formats. convert to uncompressed format if you get accurate result");
+            AZ_TracePrintf("Image processing", "GetAlphaContent() was called for compressed format\n");
             return EAlphaContent::eAlphaContent_Indeterminate;
         }