feat(knowledge): 补充建表语句和脚本

service-ai/database/service_ai_knowledge.sql

@@ -0,0 +1,10 @@
+CREATE TABLE `service_ai_knowledge`
+(
+    `id`               bigint       NOT NULL,
+    `vector_source_id` varchar(100) NOT NULL,
+    `name`             varchar(100) NOT NULL,
+    `strategy`         varchar(10)  NOT NULL,
+    `created_time`     datetime     NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    `modified_time`    datetime     NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    PRIMARY KEY (`id`)
+) DEFAULT CHARSET = utf8mb4;