Add pnpm dev command to start demo and it's packages

[jamesricky]

Description

Starting the demo with it's packages is a common use-case when working on core features, having a single command makes this easier.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[johnnyomair]

I don't like this because devs tend to start everything everywhere all at once when such a script exists, even when they only need one package. But if @thomasdax98 approves it, I'm fine with it.

[jamesricky]

I don't like this because devs tend to start everything everywhere all at once when such a script exists, even when they only need one package. But if @thomasdax98 approves it, I'm fine with it.

I see your point but I prefer to have something unnecessarily running in the background sometimes over trying to understand why my changes aren't working sometimes 😅

[johnnyomair]

I see your point but I prefer to have something unnecessarily running in the background sometimes over trying to understand why my changes aren't working sometimes 😅

If somebody complains that their Mac is running slow, I'll forward them to you 😉

[thomasdax98]

I don't feel strongly about this. Sometimes you want to start everything, then this helps you. If you carelessly start everything, then it's your own fault.

So it's fine by me