maintenance: upgrade to TypeScript 5, Oclif 4, node 18+

[paulRbr]

This is basically a re-write from scratch using a newly generated package from Oclif v4 due to a too big of a jump from Oclif v1 to oclif v4.

I've then copied files from our CLI one by one making sure compilation (and features) work.

~There are still some work to be done:~ (all done :tada:)

• [x] preview cmd
• [x] diff cmd
• [x] deploy cmd
• [x] overlay cmd
• Tests
  • [x] unit
  • [x] commands (done but there's something I'm missing they don't run!)
  • [x] integration

Notes for the reviewer

It's a big PR, sorry for that, we can do a pair-review if you feel like it :hugs:.

Also, there are a few things I had to adapt in the CLI to make this current upgrade:

• ~I couldn't get the open node package to work (it was included in oclif's fancy-ux in v1 but isn't part of oclif anymore). This lead me to comment (and thus disable the --open flag features of the CLI)~ it works!
• I could't find a way to test a “waiting” command (the bump preview --live one) because the mocha test process never ends due to the command “waiting”. I tried with mocking the stdin (as described here) but I don't think an “exit signal” character exists which I can send to stdin to stop the running command. This lead me to comment the related test.

Closes #448

[Polo2]

feedbacks following live test:

• node v20 is required as minimal version

bump preview: all good option -o does not work, IMO it can be removed

bump preview: all good

bump deploy: all good in hub, when interactive mode is selected and api filename should be removed, I have an error (only when flag --auto-create was missing, maybe a false positive)

bump diff : all good

bump overlay: all good

I'm very impressed by this new version of CLI, well done 👏

[paulRbr]

in hub, when interactive mode is selected and api filename should be removed, I have an error (only when flag --auto-create was missing, maybe a false positive)

As discussed in sync, there was a bug when selecting multiple times the same file: I've fixed the code to only present files that have not yet been selected (and thus the error should not be possible anymore)

• node v20 is required as minimal version

Changed the minimal version in the package.json :white_check_mark:

[paulRbr]

@Polo2 could you take a second look and if happy approve the PR :pray:?