Add a full PostgresSQL syntax database 'AnalyticDB' as vector store.

[wangxuqi]

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Hi there！ I'm excited to open this PR to add support for using a fully Postgres syntax compatible database 'AnalyticDB' as a vector. As AnalyticDB has been proved can be used with AutoGPT, ChatGPT-Retrieve-Plugin, and LLama-Index, I think it is also good for you. AnalyticDB is a distributed Alibaba Cloud-Native vector database. It works better when data comes to large scale. The PR includes:

• [x] A new memory: AnalyticDBVector
• [x] A suite of integration tests verifies the AnalyticDB integration

I have read your contributing guidelines. And I have passed the tests below

• [x] make format
• [x] make lint
• [x] make coverage
• [x] make test

[wangxuqi]

this looks pretty good - can you add an example notebook? that will help greatly with documentation and discoverability!

@hwchase17 OK, I'm willing to do it.

[wangxuqi]

@hwchase17 Done! I have add an example notebook and add related document