fix: Move py.typed to the hierarchy root (#751)

Author: mykola-mokhnach

appium/webdriver/py.typed appium/py.typedappium/webdriver/py.typed renamed to appium/py.typed

@@ -29,7 +29,7 @@
     author_email='isaac@saucelabs.com',
     maintainer='Kazuaki Matsuo, Mykola Mokhnach, Mori Atsushi',
     url='http://appium.io/',
-    package_data={'appium': ['webdriver/py.typed']},
+    package_data={'appium': ['py.typed']},
     packages=find_packages(include=['appium*']),
     license='Apache 2.0',
     classifiers=[