Add composer require --dev to the detail view

Problem to solve

Some extensions are expected to installed / used in dev context only. The current snippet automatically installs in prod mode.

Further details

The benefit would be to install more quickly libs in dev mode. No need anymore to adjust the copied snippet.

Proposal

We could either go the easy way and show the additional snippet always or allow an extension owner to flag the extension as dev extension which causes the proper snippet to be rendered.

Following should be discussed further:

1. Do we want to show the --dev snippet always
2. If 1 is answered with no, should an ext. owner flag the ext. as dev-ext.? Also, if an ext. is flagged as dev, should we still display the prod snippet?

What does success look like, and how can we measure that?

TBD after discussion.

Acceptence Criterias

• TBD

Links / references