Provide an ability to override CPU limits of plugin/editor containers in devfile

[skabashnyuk]

Is your task related to a problem? Please describe.

As part of this task #13709 we are going to introduce
the ability to specify CPU limits as well on the plugin containers. We also think that it would
be useful for users to have the ability to override these values too because the requirement
for different types of projects can very.

Describe the solution you'd like

Provide an ability to override CPU limits of plugin/editor containers in devfile

Describe alternatives you've considered

n/a

Additional context

n/a

[skabashnyuk]

Depends on #13709