feat(node): NNS recovery UX improvements

[andrewbattat]

NODE-1747

Create a UI console for initiating manual node recovery, vastly improving the UX experience.

• Old method: enter recovery parameters via the grub console
• New method: enter recovery parameters via a TUI:

NNS recovery TUI includes parameter validation, restricts inputing invalid non-hex characters, limits character input per field (40 for version, 64 for hashes), and produces clear error or success pages.

[andrewbattat]

Maybe I'm late with this but wouldn't the cursive crate be much easier to use?

@frankdavid
Cursive would definitely cut down on the input form boilerplate, but I don't think it's worth the change at this point. I spent a chunk of time trying to make the switch, and I was working through a bunch of small bugs with the real-time log streaming from the guestos-recovery-upgrader, and then there were issues with exiting the TUI view (it had this weird text flickering and struggled in the edge cases) and other small things. And I actually found the out-of-the-box cursive TUI uglier than the current one, but I'm sure that can be customized, I just didn't spend time figuring out how.

What we have now is stable and I don't imagine we'll be extending this code much.

[pierugo-dfinity]

Really nice feature!