changed all __main__ scripts to console_main() functions to be used as entry points

scripts/convert_snapshot_to_density.py

@@ -36,8 +36,7 @@ def convert_snapshot_to_density(snapshot_path, output_path, N=None, corner=(0.0,
     print("Done.")
 
 
-
-if __name__ == "__main__":
+def console_main():
     parser = argparse.ArgumentParser(description="Convert snapshot to density.")
     parser.add_argument(
         "-S",
@@ -76,4 +75,8 @@ if __name__ == "__main__":
         output_path=args.output,
         N=args.N,
         corner=args.corner,
-    )
+    )
+
+
+if __name__ == "__main__":
+    console_main()