full compile system build. 2. beam_spliter, MMI and spiral classes added

setup.py

@@ -11,7 +11,8 @@ def find_pyx_files(directory):
             dirs.remove('docs')
             
         for file in files:
-            if file.endswith(".py") and file != "__init__.py":
+            # if file.endswith(".py") and file != "__init__.py":
+            if file.endswith(".py"):
                 paths.append(os.path.join(root, file))
     return paths
 
@@ -30,8 +31,13 @@ extensions = [
 setup(
     name="mxpic",
     version="1.0.0",
+    # Tell setuptools to include all .pyi files across all sub-folders
+    package_data={
+        "mxpic": ["*.pyi", "**/*.pyi"],
+    },
+    include_package_data=True,
     ext_modules=cythonize(
         extensions,
-        compiler_directives={'language_level': "3"} # Force Python 3
+        compiler_directives={'language_level': "3"}
     ),
 )