Is your feature request related to a problem? Please describe.

For some legacy projects I tend to set COMPOSER_MINIMAL_CHANGES=1 in my environment, to minimise the risk when updating certain packages, or installing new ones.

I can't currently see a way to make this a rule for all project users, other than via documentation.

Describe the solution you'd like

A JSON configuration key that makes all commands behave as if --minimal changes flag is provided.