add map definition query

list_maps.pgsql

@@ -0,0 +1,19 @@
+SELECT 
+    m.srce,
+    m.target,
+    regex->>'map' map_intention,
+    regex->>'function' regex_function,
+    regex->>'where' where_clause,
+    e.v ->> 'field' result_key_name,
+    e.v ->> 'key' target_json_path,
+    e.v ->> 'flag' regex_options_flag,
+    e.v->>'retain' retain_result,
+    e.v->>'regex' regex_expression,
+    e.rn target_item_number
+FROM 
+    tps.map_rm m
+    LEFT JOIN LATERAL jsonb_array_elements(m.regex->'defn') WITH ORDINALITY e(v, rn) ON true
+ORDER BY 
+    m.srce,
+    m.target,
+    e.rn