[REQ] typescript-angular languageSpecificPrimitives

Is your feature request related to a problem? Please describe.

I have a model named Error and another one named Errors, containing a list of Error
For typescript-angular gernerator, Error is an element of the languageSpecificPrimitives list.
Therefore, the generated class/interface for Error will be ModelError.

But, for the Errors class, instead of using ModelError it still continues to use the language specific Error class:

export interface Errors { 
    errors?: Array<Error>;
}

Describe the solution you'd like

I would like:

1. that the Errors class use ModelError class with the correct import
2. to be able to customize the generated class name of a language specific primitive and the using classes to import that

Describe alternatives you've considered

As a workaround, I did these:

{
  "$schema": "./node_modules/@openapitools/openapi-generator-cli/config.schema.json",
  "spaces": 2,
  "generator-cli": {
    "version": "6.6.0",
    "generators": {
      "angular": {
        "modelNameSuffix": "DTO",
        "generatorName": "typescript-angular",
        "inputSpec": "./openapi/api-v1.0.yaml",
        "output": "src/app/api/v1.0",
        "typeMappings": {
          "Error": "\fError"
        }
      }
    }
  }
}

Note the suffix 'DTO' and the \f character in typeMappings. This correctly generates Error class as ErrorDTO class and generated ErrorsDTO is correct:

import { ErrorDTO } from './error';


export interface ErrorsDTO { 
    errors?: Array<ErrorDTO>;
}

If the \f (it works also with \n or \t or whatever escape character) character is missing, then the ErrorsDTO class stays unchanged.

Other possibility is the following:

{
  "$schema": "./node_modules/@openapitools/openapi-generator-cli/config.schema.json",
  "spaces": 2,
  "generator-cli": {
    "version": "6.6.0",
    "generators": {
      "angular": {
        "generatorName": "typescript-angular",
        "inputSpec": "./openapi/api-v1.0.yaml",
        "output": "src/app/api/v1.0",
        "typeMappings": {
          "Error": "ModelError"
        }
      }
    }
  }
}

Note there is no more model suffix here. If suffix is added, the code is not good.
ErrorDTO class goes in error.ts and in ErrorsDTO we have an import from ./modelError which does not exist:

import { ModelErrorDTO } from './modelError';


export interface ErrorsDTO { 
    errors?: Array<ModelErrorDTO>;
}

Additional context

The issue provides a typescript-angular generator configuration and generated Errors example, but names no implementation files or tests. Start by reproducing the case with the shown typeMappings and modelNameSuffix settings, then trace the typescript-angular model naming and import generation. Done means referenced language-specific primitives use the generated model name and a valid import, with customization working alongside a model suffix.