Helper script to test dandi-api against girder

Well -- this one uses our machinery with logic to traverse girder folder
and possibly would resolve some odd cases (e.g. multiple files per item)
so is not guaranteed to not report some oddity

tools/validate-api-against-girder.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+import click
+import requests
+
+from dandi.dandiapi import DandiAPIClient
+from dandi.dandiset import APIDandiset
+from dandi.girder import GirderCli
+
+
+@click.command()
+def main():
+    g_client = GirderCli("http://3.19.164.171")
+    a_client = DandiAPIClient("https://api.dandiarchive.org/api")
+
+    with a_client.session():
+        g_client.dandi_authenticate()
+        # gather all dandisets known to girder: hardcoded _id for "drafts" collection
+        g_dandisets = list(
+            g_client.listFolder("5e59bb0af19e820ab6ea6c62", "collection")
+        )
+        for dandiset, girder_id in [(x["name"], x["_id"]) for x in g_dandisets]:
+            print(f"DANDI:{dandiset}", end="\t")
+            g_meta, g_assets_ = g_client.get_dandiset_and_assets(girder_id, "folder")
+            g_assets = list(g_assets_)
+            # harmonize and get only what we care about ATM - path and size,
+            # or otherwise we would need to query each asset for metadata
+            g_assets_h = set((a["path"].lstrip("/"), a["size"]) for a in g_assets)
+
+            a_meta, a_assets_ = a_client.get_dandiset_and_assets(dandiset, "draft")
+            a_assets = list(a_assets_)
+            a_assets_h = set((a["path"].lstrip("/"), a["size"]) for a in a_assets)
+
+            if a_assets_h != g_assets_h:
+                print("differs")
+                import pdb
+
+                pdb.set_trace()
+            else:
+                print(f"{len(a_assets)} assets the same")
+
+
+if __name__ == "__main__":
+    main()