Allow path templating for pull request remediations

[rdimitrov]

Summary

The following PR enables path templating for pull request remediations.

So far this wasn't possible and it blocked the remediation type from being more versatile, whereas now this allows to set it based on the profile parameters (or of course hardcode it).

Related: https://github.com/stacklok/minder-stories/issues/129

Change Type

Mark the type of change your PR introduces:

• Bug fix (resolves an issue without affecting existing features)
• Feature (adds new functionality without breaking changes)
• Breaking change (may impact existing functionalities or require documentation updates)
• Documentation (updates or additions to documentation)
• Refactoring or test improvements (no bug fixes or new functionality)

Testing

Outline how the changes were tested, including steps to reproduce and any relevant configurations.
Attach screenshots if helpful.

Review Checklist:

• Reviewed my own code for quality and clarity.
• Added comments to complex or tricky code sections.
• Updated any affected documentation.
• Included tests that validate the fix or feature.
• Checked that related changes are merged.

[coveralls]

coverage: 54.999% (-0.01%) from 55.009%
when pulling a99155e on enable-templating-path
into 9286b31 on main.