feat: use resource id aliases in deltas for non-default classes

[chrishumanitec]

If the score.humanitec.io/resId annotation is set on a resoutce type AND the class is specified AND it is not default then generate a new resource dependency in the delta with a resource name that contains the suffix -class-{className}

Description

Changes in:

• The template code that builds the substitutions for resource placeholders
• The converter which generates the delta from the sepc.

What does this PR do?

The PR addresses this issue: [/issues/67]

Note: in the circumstance where a shared resource is already used with a class - a new resource dependency will be added to teh delta. This is a material change to teh deployment set but is not an effective change.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• New chore (expected functionality to be implemented)

Checklist:

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• I've signed off with an email address that matches the commit author.

[astromechza]

Looks good to me. The solution matches what was described in #67

[astromechza]

Good to go.