Support generating `tags` via codegen

[rushmash91]

Currently, the code generator does not support generating tags for AWS resources. Adding this functionality would greatly improve the usability of ACK controllers, as tagging is a crucial feature for many AWS services.

Proposed Solution

1. Extend the generator.yaml configuration to include a tags section where users can specify default tags or tag policies.

2. Modify the code generation logic to:

   • Add tag-related fields to the resource Spec structs
   • Include tag operations in the resource manager's Create, Update, and Delete methods
   • Generate appropriate CRD schema for tag fields

3. Update the reconciliation logic to handle tag differences between the desired and actual state of resources.

Example generator.yaml Configuration

resources:
  Repository:
    fields:
      Tags:
        type: map[string]string
    operations:
      Create:
        - TagResource
      Update:
        - TagResource
        - UntagResource
      Delete:
        - UntagResource

Benefits

• Improved resource management capabilities for ACK controllers