feat: vector integrationTest;feat: ob quantization (#6366)

* feat(vectordb): add OceanBase HNSW quantization (HNSW_SQ/HNSW_BQ) (#6348)

Support OceanBase vector index quantization via VECTOR_VQ_LEVEL:
- 32 (default): hnsw + inner_product
- 8: hnsw_sq + inner_product (2-3x memory savings)
- 1: hnsw_bq + cosine (~15x memory savings)

HNSW_BQ requires cosine distance per OceanBase docs.
Tested on OceanBase 4.3.5.5 (BP5).

Closes #6202

* feat: add test inclusion for vectorDB tests in vitest configuration (#6358)

* feat: add test inclusion for vectorDB tests in vitest configuration

* refactor: update vectorDB README and setup for environment configuration

- Enhanced README to clarify the use of factory pattern for vectorDB integration tests.
- Updated instructions for setting up environment variables from a local file.
- Removed obsolete PG integration test file and adjusted test execution instructions.
- Improved structure explanation for shared test data and factory functions.

* perf: integrationTest

* feat: vector integration

---------

Co-authored-by: ZHANG Yixin <hi.yixinz@gmail.com>
Co-authored-by: Jingchao <alswlx@gmail.com>

deploy/docker/global/docker-compose.oceanbase.yml

@@ -26,7 +26,7 @@ x-share-db-config: &x-share-db-config
 
 # 向量库相关配置
 x-vec-config: &x-vec-config
-  OCEANBASE_URL: mysql://root%40tenantname:tenantpassword@ob:2881/test
+  OCEANBASE_URL: mysql://root%40tenantname:tenantpassword@ob:2881/mysql
 
 
 version: '3.3'
@@ -52,8 +52,8 @@ services:
       - OB_SERVER_IP=127.0.0.1
       # 更多环境变量配置见oceanbase官方文档： https://www.oceanbase.com/docs/common-oceanbase-database-cn-1000000002013494
     volumes:
-      - ../ob/data:/root/ob
-      - ../ob/config:/root/.obd/cluster
+      - ./ob/data:/root/ob
+      - ./ob/config:/root/.obd/cluster
     configs:
       - source: init_sql
         target: /root/boot/init.d/init.sql