Missing 'type' keyword in generated files when importing from data-contracts

Hi there,

With the following command: `npx swagger-typescript-api -p --responses --modular --axios --unwrap-response-data --route-types --output ./src/api/types/ --name api-types.ts`

The following correct files are generated:

However, inside `ConsultRequests.ts` the types from `data-contracts.ts` are imported but should be prefixed with `type`
```typescript
// ConsultRequests.ts
import {
CommunicationMessage,
CommunicationMessageOptional,
ConsultRequest,
ConsultRequestListCollection,
InvalidContentTypeProblemDetails,
InvalidRequestBodyProblemDetails,
Item,
ItemHistory,
ProblemDetails,
} from "./data-contracts";
```

When running `vue-tsc`, which Typescript checks the project for type errors:

```bash
vue-tsc --noEmit

src/api/types/ConsultRequests.ts:12:1 - error TS1371: This import is never used as a value and must use 'import type' because 'importsNotUsedAsValues' is set to 'error'.

12 import {
~~~~~~~~
13 CommunicationMessage,
~~~~~~~~~~~~~~~~~~~~~~~
...
21 ProblemDetails,
~~~~~~~~~~~~~~~~~
22 } from "./data-contracts";
~~~~~~~~~~~~~~~~~~~~~~~~~~

src/api/types/ConsultRequests.ts:13:3 - error TS1444: 'CommunicationMessage' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

13 CommunicationMessage,
~~~~~~~~~~~~~~~~~~~~

src/api/types/ConsultRequests.ts:14:3 - error TS1444: 'CommunicationMessageOptional' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

14 CommunicationMessageOptional,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

src/api/types/ConsultRequests.ts:15:3 - error TS1444: 'ConsultRequest' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

15 ConsultRequest,
~~~~~~~~~~~~~~

src/api/types/ConsultRequests.ts:16:3 - error TS1444: 'ConsultRequestListCollection' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

16 ConsultRequestListCollection,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

src/api/types/ConsultRequests.ts:17:3 - error TS1444: 'InvalidContentTypeProblemDetails' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

17 InvalidContentTypeProblemDetails,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

src/api/types/ConsultRequests.ts:18:3 - error TS1444: 'InvalidRequestBodyProblemDetails' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

18 InvalidRequestBodyProblemDetails,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

src/api/types/ConsultRequests.ts:19:3 - error TS1444: 'Item' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

19 Item,
~~~~

src/api/types/ConsultRequests.ts:20:3 - error TS1444: 'ItemHistory' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

20 ItemHistory,
~~~~~~~~~~~

src/api/types/ConsultRequests.ts:21:3 - error TS1444: 'ProblemDetails' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

21 ProblemDetails,
~~~~~~~~~~~~~~

src/api/types/ConsultRequests.ts:23:35 - error TS1444: 'RequestParams' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

23 import { ContentType, HttpClient, RequestParams } from "./http-client";
~~~~~~~~~~~~~

src/api/types/Statistics.ts:12:1 - error TS1371: This import is never used as a value and must use 'import type' because 'importsNotUsedAsValues' is set to 'error'.

12 import { ConsultRequestStatistics, ProblemDetails } from "./data-contracts";
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

src/api/types/Statistics.ts:12:10 - error TS1444: 'ConsultRequestStatistics' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

12 import { ConsultRequestStatistics, ProblemDetails } from "./data-contracts";
~~~~~~~~~~~~~~~~~~~~~~~~

src/api/types/Statistics.ts:12:36 - error TS1444: 'ProblemDetails' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

12 import { ConsultRequestStatistics, ProblemDetails } from "./data-contracts";
~~~~~~~~~~~~~~

src/api/types/Statistics.ts:13:22 - error TS1444: 'RequestParams' is a type and must be imported using a type-only import when 'preserveValueImports' and 'isolatedModules' are both enabled.

13 import { HttpClient, RequestParams } from "./http-client";
~~~~~~~~~~~~~
```

## Workaround

I can disable/remove `--modular` from the command, and then all the Typescript errors are resolved.