final push for the solana agent kit

[luckysitara]

Pull Request Description

Related Issue

Fixes # 1,2,3,4,5,67 (issue number)

Changes Made

This PR adds the following changes:

• Get Asset by ID
• Get Assets by Authority
• Search/Lookup Assets by different criteria
• Get Assets by Creator

Implementation Details

• The actions and tools are implemented to their respective files in the metaplex/ folders of actions, tools and langchain directories.
• The actions were added as part of the SolanaAgentKit class and exported under createSolanaTools function.
• The actions utilize the @metaplex-foundation/digital-asset-standard-api SDK.

Transaction executed by agent

Example transaction:

Prompt Used

- Prompt: Get top 1 assets by creator D3XrkNZz6wx6cofot7Zohsf2KSsu2ArngNk8VqU9cTY3
- Prompt: Get asset with ID 8TrvJBRa6Pzb9BDadqroHhWTHxaxK8Ws8r91oZ2jxaVV
- Prompt: I want to get top 1 assets by authority 

Additional Notes

Checklist

• [☑️] I have tested these changes locally
• [☑️] I have updated the documentation
• [☑️ ] I have added a transaction link
• [☑️ ] I have added the prompt used to test it

[dimitrov-d]

This seems to be a complete overlap of #215 which I opened 2 days ago