Add myself as maintainer

Author: adamchainz

setup.py

@@ -8,6 +8,8 @@
     long_description=open('README.rst', encoding='utf-8').read(),
     author='Sergej Alikov',
     author_email='[email protected]',
+    maintainer='Adam Johnson',
+    maintainer_email='[email protected]',
     url='https://github.com/node13h/django-debug-toolbar-template-profiler',
     project_urls={
         "Changelog": "https://github.com/node13h/django-debug-toolbar-template-profiler/blob/master/HISTORY.rst"