Add WalletDb Initialization to MempoolNode::new() in src/mempool.rs

[Sophie-Ag00001]

PR Description: Add WalletDb Initialization to MempoolNode

Summary of Changes

This PR implements the initialization of WalletDb within the MempoolNode::new() function located in src/mempool.rs. The changes mirror the existing wallet initialization setup found in src/miner.rs, ensuring consistent functionality across the modules.

Motivation

The addition of the WalletDb initialization to the MempoolNode is aimed at enhancing the wallet handling capabilities of the mempool by providing access to the WalletDb instance. This aligns with the overall design goal of improving the integrity and accessibility of wallet data throughout various components of the application.

Background

The WalletDb has been established in the miner.rs file to facilitate wallet operations during mining processes. By replicating this setup in the mempool.rs, we ensure that wallet functionalities are consistently applied where needed, particularly within the context of transaction management and mempool operations.

Testing Instructions

1. Compile the modified code to ensure there are no syntax errors.
2. Run the existing unit and integration tests to verify that the MempoolNode operates as expected.
3. Perform manual testing to confirm that the WalletDb functionalities are correctly integrated and accessible in the mempool context.

Known Issues

There are no known issues at this time. However, future thorough testing may uncover edge cases that need to be addressed.

Feel free to reach out with any questions or for further clarification regarding this PR.