Implement a TUI explorer for the Trinci-Node's Database

The goal of the project is to implement a [TUI](https://en.wikipedia.org/wiki/Text-based_user_interface) (Text-based User Interface) that makes it easy to navigate through the data contained within the database (DB) populated by the [Trinci-Node](https://github.com/affidaty-blockchain/trinci-node), whenever a transaction is successfully completed.

The DB used by the Trinci-Node is [RocksDB](http://rocksdb.org/). The RocksDB library implements a _persistent key-value store where key and value are arrays of arbitrary bytes_.

The project consists of creating an application that:

- Implements the navigation and read-only operations of the Trinci-Node DB;

- A TUI that uses that makes it easy to navigate, query the DB, and view the data.

The project constraints are as follows:

- Writing the tool in **Rust**;

- Implementation of the TUI through the **[tui-rs](https://github.com/fdehau/tui-rs)** library.

## Related Issues

- [x] #2
- [ ] #3
- [ ] #4