Title: BlockChain Project - A SmartContract for tokenization of GreenCredits

### Initiative (Required)

Script Winter of Code (SWoC) ❄️

### Is your feature request related to a problem? Please describe.

Yes! I would like to add my Smart contract in the blockchain Directory.

### Describe the solution you'd like.

Green credits are a system of incentives awarded to individuals, businesses, or organizations for reducing carbon emissions or adopting environmentally friendly practices. These credits can be traded, sold, or used to offset one's carbon footprint, promoting sustainability. They aim to encourage renewable energy use, conservation efforts, and eco-friendly innovations.

We can create a smartContract to tokenize these Green Credits for transparency and trackability

### Add any other context or screenshots about the feature request here.

_No response_

No file, test, entry point, or contract language is named. First inspect the repository's blockchain directory and existing project conventions, then clarify the GreenCredits contract's requirements, token model, and placement. Done means an agreed smart contract is added to the directory with appropriate validation and tests.

Written by the indexing model from the issue text.