Finally implemented the actual portfolio design! This includes a tab
mechanism for various aspects of the portfolio and the complete content
for the about tab.
Also fixes the TUI not being correctly scaled due to crossterm using the
dimensions of the server console tty instead of the client pty by
defining a custom `Backend` for ratatui.
It is now possible to specify the host and port the SSH server listens
to using CLI arguments. Also improved host key naming and some inline
strings within the CLI version menu.
* Made constructed `App` instances use CLI args for `frame_rate` and
`tick_rate`
* Moved lazy constants from `LazyLock` to `lazy_static!`
* Slightly restructure SSH config initialization
* Also apply rustfmt formatting to some files
Makes controls usable by taking SSH keystroke data (encoded in the xterm
format) and converting them to crossterm `KeyCode`s / `KeyEvent`s and
sending them to the `Tui`.
Also adds support for suspension of the `Tui` over the SSH connection.
Some minor refactoring was also done.
