Refactor czi_hosted and server into backend directory, pull common code into backend/common, refactor tests (#2102)

* move local_server -> backend/server server-> backend/czi_hosted, pull common code into backend/common update imports, tests and make commands

backend/server/auth/auth_none.py

@@ -0,0 +1,27 @@
+from backend.server.auth.auth import AuthTypeBase, AuthTypeFactory
+
+
+class AuthTypeNone(AuthTypeBase):
+    def __init__(self, app_config):
+        super().__init__()
+
+    def is_valid_authentication_type(self):
+        return False
+
+    def complete_setup(self, app):
+        pass
+
+    def is_user_authenticated(self):
+        return True
+
+    def get_user_id(self):
+        return None
+
+    def get_user_name(self):
+        return None
+
+    def get_user_email(self):
+        return None
+
+
+AuthTypeFactory.register(None, AuthTypeNone)