feat: add plugin-bnb to support BNB chain

[pythonberg1997]

Relates to

N/A (No specific issue or ticket linked)

Risks

Low

• This change only adds support for BNB chain(BSC and opBNB).
• Other features and functionalities of the Eliza platform remain unaffected.

Background

We are developers from NodeReal, a leading blockchain infrastructure provider delivering comprehensive one-stop blockchain solutions. As a key contributor to BNB Chain and enthusiastic adopters of AI technology, we are excited to contribute the BNB plugin to Eliza.

What does this PR do?

This PR adds a new plugin to Eliza for BNB Chain support. With this plugin, users can perform various operations on BNB Chain, including getBalance, transfer, swap, stake, faucet, bridge, and deploy ERC20/ERC721/ERC1155 tokens.

What kind of change is this?

Features (non-breaking change which adds functionality)

Testing

Where should a reviewer start?

From packages/plugin-bnb folder.

Detailed testing steps

• Configure the plugin-bnb related entries (BNB_PRIVATE_KEY and BNB_PUBLIC_KEY) in the .env file to enable plugin-bnb and start the client.
• As a user, ask Eliza to do any action that plugin-bnb supported(getBalance/transfer/staking/faucet/swap/bridge/deploy ERC20/ERC721/ERC1155 tokens).
• Verify that the return result is correct and the transaction completes successfully on chain.

Discord username

pythonberg