Update __hello__ and __phello__ from cpython

Lib/__hello__.py

@@ -0,0 +1,16 @@
+initialized = True
+
+class TestFrozenUtf8_1:
+    """\u00b6"""
+
+class TestFrozenUtf8_2:
+    """\u03c0"""
+
+class TestFrozenUtf8_4:
+    """\U0001f600"""
+
+def main():
+    print("Hello world!")
+
+if __name__ == '__main__':
+    main()

Lib/__phello__/__init__.py

@@ -0,0 +1,7 @@
+initialized = True
+
+def main():
+    print("Hello world!")
+
+if __name__ == '__main__':
+    main()

Lib/__phello__/spam.py

@@ -0,0 +1,7 @@
+initialized = True
+
+def main():
+    print("Hello world!")
+
+if __name__ == '__main__':
+    main()

vm/Lib/python_builtins/__hello__.py

@@ -0,0 +1 @@
+../../../Lib/__hello__.py

vm/Lib/python_builtins/__phello__

@@ -0,0 +1 @@
+../../../Lib/__phello__

vm/src/frozen.rs

@@ -11,11 +11,12 @@ pub fn core_frozen_inits() -> impl Iterator<Item = (String, FrozenModule)> {
         };
     }
 
-    ext_modules!(
-        iter,
-        source = "initialized = True; print(\"Hello world!\")\n",
-        module_name = "__hello__",
-    );
+    // keep as example but use file one now
+    // ext_modules!(
+    //     iter,
+    //     source = "initialized = True; print(\"Hello world!\")\n",
+    //     module_name = "__hello__",
+    // );
 
     // Python modules that the vm calls into, but are not actually part of the stdlib. They could
     // in theory be implemented in Rust, but are easiest to do in Python for one reason or another.