Updated legacy Editor and Asset Processor icons on Mac to O3DE icons.

Signed-off-by: cgalvan <cgalvan1337@gmail.com>

Code/Tools/AssetProcessor/Platform/Mac/Images.xcassets/AppIcon.appiconset/Contents.json

@@ -33,6 +33,7 @@
     {
       "idiom" : "mac",
       "size" : "256x256",
+      "filename" : "icon_256x256.png",
       "scale" : "1x"
     },
     {
@@ -43,7 +44,6 @@
     {
       "size" : "512x512",
       "idiom" : "mac",
-      "filename" : "icon_512x512.png",
       "scale" : "1x"
     },
     {

Code/Tools/AssetProcessor/Platform/Mac/Images.xcassets/AppIcon.appiconset/icon_256x256.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9f16c891aaa1686a3735fe84c7a69c3cef24e68af7baa86bf2f54ab4d51b71e8
+size 8489

Code/Tools/AssetProcessor/Platform/Mac/Images.xcassets/AppIcon.appiconset/icon_512x512.png

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a396a13d3bc7ca074cdc6fdd072ba18c2e359bd24408783809b6c90adf23e22a
-size 21937

Code/Tools/AssetProcessor/Platform/Mac/Images.xcassets/AssetProcessorAppIcon.appiconset/Contents.json

@@ -33,6 +33,7 @@
     {
       "idiom" : "mac",
       "size" : "256x256",
+      "filename" : "icon_256x256.png",
       "scale" : "1x"
     },
     {
@@ -43,7 +44,6 @@
     {
       "size" : "512x512",
       "idiom" : "mac",
-      "filename" : "icon_512x512.png",
       "scale" : "1x"
     },
     {

Code/Tools/AssetProcessor/Platform/Mac/Images.xcassets/AssetProcessorAppIcon.appiconset/icon_256x256.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9f16c891aaa1686a3735fe84c7a69c3cef24e68af7baa86bf2f54ab4d51b71e8
+size 8489

Code/Tools/AssetProcessor/Platform/Mac/Images.xcassets/AssetProcessorAppIcon.appiconset/icon_512x512.png

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a396a13d3bc7ca074cdc6fdd072ba18c2e359bd24408783809b6c90adf23e22a
-size 21937