[feat]: add config item for package manager

[jcramb]

Feature description

At the moment the npx script assumes use of npm which can cause issues with projects which use pnpm or other package managers. It would be great if we could configure the package manager via the components.json or have it otherwise detect the lockfiles present to infer which package manager is in use.

Affected component/components

No response

Additional Context

Additional details here...

Before submitting

• [X] I've made research efforts and searched the documentation
• [X] I've searched for existing issues and PRs

[hngngn]

If you just scaffold a new project without running install, then it will use npm by default.