Implement Mint Token

[jaycoolh]

Description:
Add the ability to mint additional tokens (fungible or non-fungible). This is an essential capability for dynamically increasing the total supply of a token post-creation.

Roadmap Reference: ROADMAP.md > Native Hedera Token Service > Mint Token

Proposed Implementation/Tasks:

• Extend existing tools to support mintToken functionality from the Hedera SDK.
• Provide a simple interface (e.g., mintFT() or mintNFT()).
• Return updated token info (new total supply) or relevant transaction details.

Checklist:

• Implement mintToken function(s).
• Write unit tests for minting scenarios (e.g., successful mint, error handling).
• Update any relevant docs or references.

Additional Context/Notes:

• For NFT minting, metadata is needed. Let's assume the metadata will be string / strings will available in the prompt

Milestone: v0.1 - Token Service

DCO Requirement:
All commits must be DCO-signed. Please run git commit -s.

Assignees: tbc