[mod] ExpireCacheSQLite - implement .setmany() for bulk loading

[1] https://github.com/searxng/searxng/issues/5223#issuecomment-3328597147

Suggested-by: Ivan G <igabaldon@inetol.net> [1]
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/data/__main__.py

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+"""Command line implementation"""
+
+import typer
+
+from .core import get_cache
+
+app = typer.Typer()
+
+
+@app.command()
+def state():
+    """show state of the cache"""
+    cache = get_cache()
+    for table in cache.table_names:
+        for row in cache.DB.execute(f"SELECT count(*) FROM {table}"):
+            print(f"cache table {table} holds {row[0]} key/value pairs")
+
+
+app()