add py.typed file (#104)

Co-authored-by: Mark Kuhn <[email protected]>

Author: gruebel

aws_embedded_metrics/py.typed

@@ -22,6 +22,9 @@
         "License :: OSI Approved :: Apache Software License",
     ],
     packages=find_packages(exclude=["tests*"]),
+    package_data={
+        "aws_embedded_metrics": ["py.typed"],
+    },
     include_package_data=True,
     install_requires=["aiohttp"],
     test_suite="tests",