core: add __NOT_HPI_MODULE__ flag to mark utility files etc

(more of an intermediate solution perhaps)

my/location/__main__.py

@@ -1,24 +0,0 @@
-import sys
-
-from .takeout import logger, get_locations, iter_locations, get_groups
-
-
-# TODO remove this?
-def main():
-    if len(sys.argv) > 1:
-        cmd = sys.argv[1]
-        # TODO ok, update cache makes sense just to refresh in case of code changes...
-        # TODO don't even need it anymore? cachew handles this..
-        if cmd == "update_cache":
-            from .takeout import update_cache, get_locations
-            update_cache()
-        else:
-            raise RuntimeError(f"Unknown command {cmd}")
-    else:
-        for p in get_groups():
-            print(p)
-            # shit. ok, 4 gigs of ram is def too much for glumov...
-            # TODO need datetime!
-
-if __name__ == '__main__':
-    main()