[IGNORE] Replace npm by pnpm

[Gladorme]

Description

Replacing npm by pnpm to save disk space (+ time). It's really useful for us as we have shared deps between repo and it's now even more useful with IA where you can have a lot of worktrees!

With pnpm files inside node_modules are linked from a single content-addressable storage (no more duplication on all repos/worktrees).

And it's supporting workspaces, that allow us to remove turbo, that is pain to maintain (at least to me when I need to touch it 😆)

I still need to test a little bit more if everything is working as intended, but it looks promising to me 😄

Related PRs:

• [IGNORE] Replace npm by pnpm spec#85
• [IGNORE] Replace npm by pnpm shared#272
• [IGNORE] Replace npm by pnpm perses#4403

Screenshots

Checklist

• Pull request has a descriptive title and context useful to a reviewer.
• Pull request title follows the [<catalog_entry>] <commit message> naming convention using one of the
  following catalog_entry values: FEATURE, ENHANCEMENT, BUGFIX, BREAKINGCHANGE, DOC,IGNORE.
• All commits have DCO signoffs.

UI Changes

• Changes that impact the UI include screenshots and/or screencasts of the relevant changes.
• Code follows the UI guidelines.