Configurable pr titles for manifest releases in a monorepo with many components

[dluftspring]

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

As a developer I want to be able to control the pr titles that release please generates for all of my components in a monorepo

Describe the solution you'd like

I want the configuration option that works for single package repositories to also work for monorepos with many components instead of the default which is chore($branch_ref) release "$group" libraries for linked components and chore($branch_ref) release $component $version for non linked components

Describe alternatives you've considered

If I even try to set the option it causes release-please to malfunction so there are no other alternatives

Additional context