feature: add sqlite kv db

query.sql

@@ -0,0 +1,15 @@
+-- name: GetItem :one
+SELECT *
+FROM store
+WHERE id = ?
+LIMIT 1;
+
+-- name: CountItems :one
+SELECT count(*)
+FROM store;
+
+-- name: CreateItem :exec
+INSERT INTO store (id, data)
+VALUES (?1, ?2)
+ON CONFLICT(id)
+    DO UPDATE SET data = ?2;