chore: update dependency, bump version

[yuanbohan]

GreptimeAI won't take langchain, tiktoken as a necessary dependency.

• remove langchain dependency
• add openai optional dependency, and move tiktoken into it. Like if you want to calculate OpenAI streaming token and cost, you can: pip install 'langchain[openai]'

and I will update greptimeai-cookbook based on this update

[sunng87]

Sounds good for us to assume langchain as a provided dependency. But we might need to update docs to reflect the change.

[yuanbohan]

Sounds good for us to assume langchain as a provided dependency. But we might need to update docs to reflect the change.

👍
What about only show basic setup for GreptimeAI, and leave code samples for specific framework in examples or greptimeai-cookbook.

[yuanbohan]

Sounds good for us to assume langchain as a provided dependency. But we might need to update docs to reflect the change.

Actually, GreptimeAI acts as a dependency of the Framework or Service

[sunng87]

Yes, we can change installation step to pip install langchain greptimeai