feat: Add NFT transfer and balance actions

[phdargen]

What changed? Why?

Added two new actions for NFT (ERC721) support:

• TransferNftAction: Transfer NFTs between addresses

• GetBalanceNftAction: Check NFT ownership and balances

These actions enable agents to handle NFT operations similar to existing ERC20 functionality.

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1

[0xRAG]

Thank you for your contribution @phdargen! Can you please rebase your PR with the latest from main? For context, we re-structured the repo to house both the Python and TypeScript variant of each package. We went ahead and took care of this for you, thanks again for the contribution 🙏

[cb-heimdall]

Review Error for 0xRAG @ 2025-01-16 20:44:03 UTC
User cannot review their own commit

[cb-heimdall]

This Pull Request was merged without enough reviews
Please go here to review and +1

[phdargen]

thanks for rebasing @0xRAG, I was just about to get onto it.

Your TypeScript port is also much appreciated.
Now that the packages are combined, should a new feature usually be implemented in both python and ts before opening a PR? Maybe your team could add some guidelines about this in CONTRIBUTING.md.

[0xRAG]

thanks for rebasing @0xRAG, I was just about to get onto it.

Your TypeScript port is also much appreciated. Now that the packages are combined, should a new feature usually be implemented in both python and ts before opening a PR? Maybe your team could add some guidelines about this in CONTRIBUTING.md.

It's not necessary, but would be welcome!