Converts the ad-hoc design of the Material Editor to utilize the same inspector interface as most everything else does.

- Overhauls the material editor to simplify and streamline the logic behind it since the inspector does most of the work
- Tweak a few order positions of materialdefinition fields to work better
- Sets AO, Rough and Metal channel fields to use an enum type for human readability
- Updates the MaterialPreview gui control to work with assetIds
- MatEd now supports setting of parent material to inherit from
- Creating a new material now can prompt selecting an existing material to inherit from
- Can now edit the mapTo value of a material in the matEd
- New standalone Composite Texture Editor window for convering AO, Roughness and Metalness maps in a material to an ORMMap
- Can also star the creation of a composite texture via RMB context menu in AB on an image asset
- Moved logic of CubemapEditor from MatEd to it's own stuff
- Made ImageAsset fields now be more clear when they have nothing assigned, and also have a clear button to empty the field's value so it's consistent across the board
- Reorganized the layout of the gui and image files for the MatEd to be easier to navigate
- MaterialEditor now overlays the EditorGUI instead of being forcefully embedded in it, allowing easy editing of the MatEd Gui via the Gui editor

Engine/source/gui/editor/inspector/field.cpp

@@ -1050,6 +1050,15 @@ DefineEngineMethod(GuiInspectorField, setCaption, void, (String newCaption),, "(
    object->setCaption(StringTable->insert(newCaption.c_str()));
 }
 
+DefineEngineMethod(GuiInspectorField, getFieldName, const char*, (), , "() - Gets the fieldName of the field.")
+{
+   constexpr U32 bufSize = 128;
+   char* retBuffer = Con::getReturnBuffer(bufSize);
+   dSprintf(retBuffer, bufSize, "%s", object->getFieldName());
+
+   return retBuffer;
+}
+
 DefineEngineMethod(GuiInspectorField, setSpecialEditVariableName, void, (String newCaption), , "() - Sets the variable name for special edit fields.")
 {
    object->setSpecialEditVariableName(StringTable->insert(newCaption.c_str()));

Engine/source/gui/editor/inspector/field.h

@@ -132,6 +132,8 @@ class GuiInspectorField : public GuiControl
       /// this is exposed in case someone wants to override the normal caption.
       virtual void setCaption( StringTableEntry caption ) { mCaption = caption; }
 
+      virtual StringTableEntry getCaption() { return mCaption; }
+
       void setEditControl(GuiControl* editCtrl);
 
       void setHeightOverride(bool useOverride, U32 heightOverride);

Engine/source/gui/editor/inspector/group.cpp

@@ -211,7 +211,7 @@ GuiInspectorField *GuiInspectorGroup::findField( const char *fieldName )
 
    for( ; i != mChildren.end(); i++ )
    {
-      if( (*i)->getFieldName() != NULL && dStricmp( (*i)->getFieldName(), fieldName ) == 0 )
+      if( ((*i)->getFieldName() != NULL && dStricmp( (*i)->getFieldName(), fieldName ) == 0) || ((*i)->getCaption() != StringTable->EmptyString() && dStricmp((*i)->getCaption(), fieldName) == 0) )
          return (*i);
    }
 
@@ -834,3 +834,26 @@ DefineEngineMethod(GuiInspectorGroup, setForcedArrayIndex, void, (S32 arrayIndex
 {
    object->setForcedArrayIndex(arrayIndex);
 }
+
+DefineEngineMethod(GuiInspectorGroup, findField, S32, (const char* fieldName),,
+   "Finds an Inspector field in this group of a given name.\n"
+   "@param fieldName The name of the field to be found.\n"
+   "@return Field SimObjectId")
+{
+   if (dStrEqual(fieldName, ""))
+      return 0;
+
+   GuiInspectorField* field = object->findField(StringTable->insert(fieldName));
+   if (field == nullptr)
+      return 0;
+
+   return field->getId();
+}
+
+DefineEngineMethod(GuiInspectorGroup, refresh, void, (), ,
+   "Finds an Inspector field in this group of a given name.\n"
+   "@param fieldName The name of the field to be found.\n"
+   "@return Field SimObjectId")
+{
+   object->inspectGroup();
+}