chore: add script for generating tarantool snapshots

test/generate_snapshot.py

+from conftest import Cluster, Compatibility, PortDistributor
+from pathlib import Path
+
+import conftest
+import shutil
+
+
+if __name__ == "__main__":
+    conftest.cargo_build()
+    port_distributor = PortDistributor(1333, 1344)
+    tmpdir = Path("./tmp_generate_snapshot").resolve()
+    tmpdir.mkdir(exist_ok=True)
+    try:
+        cluster = Cluster(
+            binary_path=conftest.binary_path(),
+            id="cluster_to_gen_snap",
+            data_dir=str(tmpdir),
+            base_host="localhost",
+            port_distributor=port_distributor,
+        )
+        inst = cluster.add_instance()
+
+        compat = Compatibility()
+        compat.fetch_current_tag()
+        compat.fill_snapshot_with_data(inst)
+        compat.copy_latest_snapshot(inst)
+
+        print(
+            f"Succesfully generated snapshot of {compat.tag} and copied into {compat.path}"
+        )
+        cluster.kill()
+    finally:
+        shutil.rmtree(tmpdir)