Added imports to PluginListInterface File

[tinder-SamMarshall]

This adds configurable imports to the PlugListInterface file

[tinder-cfuller]

Please add this new config option to the following locations.

• Nodes/Tests/NodesGeneratorTests/ConfigTests.swift

  Line 129 in 634406d

  private func givenConfigYAML() -> String {

• Nodes/Tests/NodesGeneratorTests/Support/TestFactories.swift

  Line 18 in 634406d

  internal func givenConfig() -> Config {

• Nodes/Customization/Configuration.md

  Line 40 in 634406d

  ```yaml

Thank you!