feat(InterfaceTypes): add Transform

Also make the Python Enum a string Enum and shorten the string value.

Author: thewtex

docs/cxx/interface_types.md

@@ -9,6 +9,7 @@ itk-wasm execution pipelines support the following [interface types](https://git
 - [Image](../typescript/interface_types/Image)
 - [Mesh](../typescript/interface_types/Mesh)
 - [PolyData](../typescript/interface_types/PolyData)
+- [Transform](../typescript/interface_types/Transform)
 - [JsonCompatible](../typescript/interface_types/JsonCompatible)
 
 These interfaces types are supported in the [Emscripten interface](../typescript/browser_pipelines), [WASI](https://wasi.dev/) embedding interfaces, and native or virtual [filesystem IO](../introduction/file_formats/index). They are intended to be forward-compatible with the [WebAssembly Component Model](https://github.com/WebAssembly/component-model).

packages/core/python/itkwasm/itkwasm/interface_types.py

@@ -1,12 +1,12 @@
 from enum import Enum
 
-
-class InterfaceTypes(Enum):
-    TextFile = "InterfaceTextFile"
-    BinaryFile = "InterfaceBinaryFile"
-    TextStream = "InterfaceTextStream"
-    BinaryStream = "InterfaceBinaryStream"
-    Image = "InterfaceImage"
-    Mesh = "InterfaceMesh"
-    PolyData = "InterfacePolyData"
-    JsonCompatible = "InterfaceJsonCompatible"
+class InterfaceTypes(str, Enum):
+    TextFile = "TextFile"
+    BinaryFile = "BinaryFile"
+    TextStream = "TextStream"
+    BinaryStream = "BinaryStream"
+    Image = "Image"
+    Mesh = "Mesh"
+    PolyData = "PolyData"
+    Transform = "Transform"
+    JsonCompatible = "JsonCompatible"

packages/core/typescript/itk-wasm/src/interface-types/interface-types.ts

@@ -6,6 +6,7 @@ const InterfaceTypes = {
   Image: 'Image',
   Mesh: 'Mesh',
   PolyData: 'PolyData',
+  Transform: 'Transform',
   JsonCompatible: 'JsonCompatible'
 } as const