feat(cli): Add deploy revisions list command (#7142)

### Summary
```
% langgraph deploy revisions list f5bb6e58-e2ab-40b9-9855-d6dd6d1051b6
No LangSmith API key found. Create one at Settings > API Keys in LangSmith.
Enter LangSmith API key: 
Revision ID                           Status    Created At                 
------------------------------------  --------  ---------------------------
fe05f163-58cf-4783-a918-0c78a8fab0c7  BUILDING  2026-03-12T20:47:14.626436Z
03c32fcf-544f-4517-a016-c7a7243b898d  DEPLOYED  2026-03-12T20:30:09.199275Z
29605810-29cc-4110-ac05-d43e564827d0  DEPLOYED  2026-03-12T19:56:36.232427Z
```

libs/cli/langgraph_cli/util.py

@@ -57,3 +57,35 @@ def format_deployments_table(deployments: Sequence[dict[str, object]]) -> str:
     lines = [format_row(headers), format_row(tuple("-" * width for width in widths))]
     lines.extend(format_row(row) for row in rows)
     return "\n".join(lines)
+
+
+def format_revisions_table(revisions: Sequence[dict[str, object]]) -> str:
+    headers = ("Revision ID", "Status", "Created At")
+    latest_deployed_seen = False
+    rows = []
+    for revision in revisions:
+        status = str(revision.get("status", "-") or "-")
+        if status == "DEPLOYED":
+            if latest_deployed_seen:
+                status = "REPLACED"
+            else:
+                latest_deployed_seen = True
+        rows.append(
+            (
+                str(revision.get("id", "-") or "-"),
+                status,
+                str(revision.get("created_at", "-") or "-"),
+            )
+        )
+
+    widths = [
+        max(len(headers[index]), *(len(row[index]) for row in rows))
+        for index in range(len(headers))
+    ]
+
+    def format_row(row: Sequence[str]) -> str:
+        return "  ".join(value.ljust(widths[index]) for index, value in enumerate(row))
+
+    lines = [format_row(headers), format_row(tuple("-" * width for width in widths))]
+    lines.extend(format_row(row) for row in rows)
+    return "\n".join(lines)