feat(extension): adds an extension operation for installing timescale to be used in migrations

Author: ollz272

timescale/db/operations.py

@@ -0,0 +1,6 @@
+from django.contrib.postgres.operations import CreateExtension
+
+
+class TimescaleExtension(CreateExtension):
+    def __init__(self):
+        self.name = "timescaledb"