cmdutil.ReadConsole[NoEcho]: Use bubbletea

[abhinav]

Switch the cmdutil.ReadConsole and cmdutil.ReadConsoleNoEcho functions
to use the bubbletea library to render the prompt,
using the textinput widget provided by the accompanying bubbles library.
The resulting input widgets support arrow keys, back space,
and some basic readline-style bindings including Ctrl-A, Alt-B, etc.

I went through all uses of ReadConsole or ReadConsoleNoEcho.
Only the one in new.go had a non-compliant prompt that I had to adjust.

Note: One divergence in behavior I opted for was that
password prompts will echo '*' characters as the user is typing
and then no echo once they've accepted or canceled the value.
Previously, the prompt did not echo anything in either case.

Introduction if you're unfamiliar with bubbletea

bubbletea operates by modeling the widget state as
an immutable data structure that receives messages for events.
On receiving a message (key press, e.g.) the model's Update method
returns a new model instance representing its new state.
Update may also optionally return additional commands for the program,
e.g. stop running, or print something and move on.
The model's View method returns what should be drawn in the terminal
based on the model's current state.
This programming model makes it reasonably straightforward to unit test
some of the core functionality of independent widgets
as demonstrated in this PR.

Resolves #1565

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Demos:

Plain text

Secret

Secret prompt with padding

[pulumi-bot]

Changelog

[uncommitted] (2023-08-30)

Miscellaneous

• [cli] Some CLI prompts now support backspace, arrow keys, etc.
  #13815

[abhinav]

I should point out that if we accept this change, this would be a commitment to migrating away from survey long-term in favor of bubbletea.

[Frassle]

One minor comment otherwise looks sane. Happy to have bubbletea as a dep, probably a lot of other fancy UI work we can do with it.