Add `ResourceModel.List` implementation for BadgerDB

[jim-junior]

Description

Add the List method BadgerDB implementation in

conveyor/internal/models/resource.go

Line 94 in 2572f4c

func (m *ResourceModel) List(resourceType string) ([]string, error) {

. This method is responsible for scanning the database for all keys associated with a specific resource type and returning a list of their names (keys).

Requirements

• File Location: internal/models/resource.go
• Transactionality: Use a BadgerDB View (read-only) transaction.
• Prefix Scanning: * Utilize a BadgerDB Iterator to scan for keys starting with the prefix: /resources/{resourceType}/.
  • The implementation must ensure it only collects the primary resource keys and handles the logic to filter out or include versioned sub-keys based on the existing application expectations.
• Data Extraction: Extract and collect the keys as a slice of strings ([]string).
• Dependency Injection: The method must use the injected *badger.DB instance.
• Testing: A corresponding test case must be created in internal/models/resource_test.go.

Success Criteria

• The List method successfully performs a prefix scan on the BadgerDB store.
• The method returns an accurate slice of keys belonging to the requested resourceType.
• The iterator is correctly closed/deferred to prevent memory leaks.
• Test Case implementation: A unit test is provided that:
  • Pre-populates an in-memory BadgerDB with multiple resources of different types.
  • Calls List for a specific type.
  • Asserts that the returned slice contains all expected keys for that type and none from others.
  • Verifies the behavior when no resources of that type exist (should return an empty slice or error consistent with current behavior).

[jim-junior]

For reference implementation see PR #221