RFC: Add lake clean -i / --interactive

Proposal

lake clean removes files off the filesystem.

git clean, which is similar, supports a -i / --interactive option which will allow the user to confirm they are removing what they intend to *interactively.

As an example, here's what one sees in a toy example repository containing:

~/Desktop/foo is a git repository on main 
⊙  tree                                                                                                                                                                                                                                                                                                             julian@Airm
.
└── bar
    └── baz
        ├── c
        └── quux
            ├── a
            └── b

4 directories, 3 files

which when running git clean -xdi (and not having bar tracked) produces:

⊙  g clean -xdi                                                                                                                                                                                                                                                                                                     julian@Airm
Would remove the following item:
  bar/
*** Commands ***
    1: clean                2: filter by pattern    3: select by numbers    4: ask each             5: quit                 6: help
What now> 

with git waiting for confirmation.

rm notably has a similar option (two actually), one -i and another -I, the latter essentially being equivalent to -i except it will only prompt the user if more than 3 files are being removed, which can be useful.

Community Feedback

Previously discussed here

Impact

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Start by locating the lake clean command entry point and review the proposal's comparison with git clean -i and rm -i. Determine the intended interactive behavior and confirmation flow, then verify that cleaning can prompt users before removing files without changing the existing non-interactive behavior.