feat!: drop modules, general refactor and cleanup

runtime/queries/sparql/folds.scm

@@ -0,0 +1,26 @@
+[
+  (prologue)
+  (select_query)
+  (construct_query)
+  (describe_query)
+  (ask_query)
+  (values_clause)
+  (load)
+  (clear)
+  (drop)
+  (add)
+  (move)
+  (copy)
+  (create)
+  (insert_data)
+  (delete_data)
+  (delete_where)
+  (modify)
+  (group_graph_pattern)
+  (triples_same_subject)
+  (where_clause)
+  (delete_clause)
+  (insert_clause)
+  (data_block)
+  (blank_node_property_list)
+] @fold