[Feature]: Add ERC-6909 Content URI Extension

[bidzyyys]

What is the feature you would like to see?

Follow:

• EIP-6909
• Solidity Implementation

Blocked by #778.

Contribution Guidelines

• I agree to follow this project's Contribution Guidelines

[Salonii02]

Can you assign this to me? @bidzyyys, Can work once the original PR is merged.