librustzcash for ZcashTxTool for tx-v5

[PaulLaux]

No description provided.

[what-the-diff]

PR Summary

• Enhanced Access on from_data Function
  The visibility of the from_data function within the BlockHeader structure has been changed from private to public. This could allow other parts of the application more straightforward access to this function, leading to more flexibility and potential for integration with other features.

• Addition of New note.rs Functionality
  A new file note.rs has been created in the transaction/components directory. This file includes new functionality concerning the handling of transaction notes, enabling reading and writing of these notes. This feature could enhance the ability to keep track of transaction details.

• Increased Visibility of TxId Structure
  The visibility of the TxId structure in file transaction/mod.rs has been changed to public. This change could provide wider access to this structure within the system, promoting enhanced integration and usage across different modules.