docs: add xceditor api tree and new resource docs

docs/api/_tools/scaffold_xceditor_layout.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+import runpy
+import sys
+from pathlib import Path
+
+
+SCRIPT_DIR = Path(__file__).resolve().parent
+IMPLEMENTATION = SCRIPT_DIR / "scaffold_parallel_layout.py"
+REPO_ROOT = SCRIPT_DIR.parents[2]
+XCEDITOR_INCLUDE_ROOT = REPO_ROOT / "new_editor" / "include" / "XCEditor"
+
+
+def main() -> int:
+    old_argv = sys.argv
+    sys.argv = [
+        str(IMPLEMENTATION),
+        "--root-name",
+        "XCEditor",
+        "--include-root",
+        str(XCEDITOR_INCLUDE_ROOT),
+    ]
+    try:
+        module_globals = runpy.run_path(str(IMPLEMENTATION))
+        return int(module_globals["main"]())
+    finally:
+        sys.argv = old_argv
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())