[BUG] typescript-axios generator doesn't mark deprecated methods as deprecated.

Created by: triforcely

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• [] Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

typescript-axios generator doesn't mark deprecated paths in generated typescript code.

openapi-generator version

5.1.1

OpenAPI declaration file content or url

openapi: 3.0.1
info:
  version: '1.0'
  title: Test
paths:
  "/apiVersionTest":
    get:
      tags:
      - ApiVersionTest
      operationId: Get
      parameters:
      - name: api-version
        in: header
        required: true
        schema:
          enum:
          - '1.0'
      responses:
        '200':
          description: Success
      deprecated: true

Generation Details

I'm using following command:

openapi-generator-cli generate -i ./schema.json -g typescript-axios --skip-validate-spec

Suggest a fix

I think that the generator is simply missing handling of deprecated endpoints. I will be happy to extend it if somebody could point me in the right direction.