[feat] ES support vector search

[oushu1zhangxiangxuan1]

Description

1. 之前的es向量检索实际是关键词检索，PR升级为向量检索
2. 加入es extra依赖到toml中
3. 同时修复es初始化时create_collection导致index_exists为TRUE从而跳过实际向量化过程

How Has This Been Tested?

本地es 向量化、删除、检索通过

Snapshots:

Include snapshots for easier review.

Checklist:

• My code follows the style guidelines of this project
• I have already rebased the commits and make the commit message conform to the project standard.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Any dependent changes have been merged and published in downstream modules

[Aries-ckt]

hi @oushu1zhangxiangxuan1 , thanks for your elasticsearch vector store contribution, But the langchain framework is too big for us. Can you remove the langchain related packages and use the elasticsearch api directly?

[oushu1zhangxiangxuan1]

I'll try&test