ENH: Move wasm/ to top level

This allows us to build the ITK module sources and use the current ITK module sources in the wasm build (as opposed to the Docker image contents).

Author: thewtex

CMakeLists.txt

@@ -5,6 +5,10 @@ if(NOT ITK_SOURCE_DIR)
   find_package(ITK REQUIRED)
   list(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})
   include(ITKModuleExternal)
+  if(WASI OR EMSCRIPTEN)
+    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+    add_subdirectory(wasm)
+  endif()
 else()
   set(ITK_DIR ${CMAKE_BINARY_DIR})
   itk_module_impl()