Initial my.time.tz provider, infer from location with daily resolution

my/time/tz/main.py

@@ -0,0 +1,9 @@
+'''
+Timezone data provider
+'''
+from datetime import datetime
+
+def localize(dt: datetime) -> datetime:
+    # For now, it's user's reponsibility to check that it actually managed to localize
+    from . import via_location as L
+    return L.localize(dt)