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/Assets/Config/UserInterface_Compressed.preset

@@ -0,0 +1,41 @@
+{
+    "Type": "JsonSerialization",
+    "Version": 1,
+    "ClassName": "MultiplatformPresetSettings",
+    "ClassData": {
+        "DefaultPreset": {
+            "UUID": "{2828FBFE-BDF9-45A7-9370-F93822719CCF}",
+            "Name": "UserInterface_Compressed",
+            "SuppressEngineReduce": true,
+            "PixelFormat": "R8G8B8A8",
+            "SourceColor": "Linear",
+            "DestColor": "Linear"
+        },
+        "PlatformsPresets": {
+            "android": {
+                "UUID": "{2828FBFE-BDF9-45A7-9370-F93822719CCF}",
+                "Name": "UserInterface_Compressed",
+                "SuppressEngineReduce": true,
+                "PixelFormat": "ASTC_6x6"
+            },
+            "ios": {
+                "UUID": "{2828FBFE-BDF9-45A7-9370-F93822719CCF}",
+                "Name": "UserInterface_Compressed",
+                "SuppressEngineReduce": true,
+                "PixelFormat": "ASTC_6x6"
+            },
+            "mac": {
+                "UUID": "{2828FBFE-BDF9-45A7-9370-F93822719CCF}",
+                "Name": "UserInterface_Compressed",
+                "SuppressEngineReduce": true,
+                "PixelFormat": "BC1"
+            },
+            "provo": {
+                "UUID": "{2828FBFE-BDF9-45A7-9370-F93822719CCF}",
+                "Name": "UserInterface_Compressed",
+                "SuppressEngineReduce": true,
+                "PixelFormat": "BC1"
+            }
+        }
+    }
+}