feat: Switch from npm to pnpm

[netroy]

No description provided.

[linear]

N8N-5200

[cstuncsik]

Finally, we got here! Thanks for taking the effort! I left some comments and would be happy if someone else would also have a look.

[ivov]

Tested via pnpm: start, build, dev, clean, lint, lintfix, format

[janober]

Got released with n8n@0.202.0

[borisbsu]

pnpm author is agains Open Intenet principals and blocks access to developers from multiple countries:
pnpm/pnpm#4800
pnpm/pnpm#5626
pnpm/pnpm#4498

I've spent an hour to find out a real reason why n8n can not be installed on my local machine. And cause of problem was in pnpm package manager. At the end I enabled VPN to overcome the problem.

IMHO - the Internet should be Opened for all individuals whenever from his residence, region and personaliy. So I recommend to not use pnpm package manager in n8n and switch to other well working alternatives like yarn or bit.

[netroy]

@borisbsu You don't need pnpm to install n8n. pnpm is only needed for our development setup. We tried yarn first, as many of us have prior experience with yarn, but yarn doesn't have an equivalent of --omit-dev since version 2.x, which leads to us having to ship dev dependencies in our docker builds.

However we do agree with you that the Internet should be open to app, and that's why the we provide multiple ways to install n8n, none of which require the end-user to even know what pnpm is.