Is your feature request related to a problem?

I utilize annotations to validate payloads for DTOs, like so:

someField:
  type: string
  x-field-extra-annotation: >
    @my.project.validation.annotations.Somefield

This allows for me to validate the incoming DTOs across my projects, reusing the annotations in combination with the vendor extension.
I want to be able to do something similar for path parameters, with the Spring generator

Describe the solution you'd like

I would like to be able to utilize the vendor-extension pattern for my path parameters, to be able to validate path parameters in a similar fashion as I do with my DTOs.

openapi: 3.0.1
info:
  title: headers
  version: 0.0.1
paths: { }
components:
  parameters:
    PARAMETER:
      in: path
      name: parameter
      schema:
        type: string
      required: true
      x-parameter-extra-annotation: >
        @my.project.validation.annotations.SomeAnnotation

would generate:

interface MyController
{
   @RequestMapping(
         method = RequestMethod.GET,
         value = "/some/path/{parameter}/end",
         produces = { "application/json;charset=utf-8" }
   )
   ResponseEntity<SomeDTO> someMethod(
         @Parameter(name = "parameter", description = "", required = true, in = ParameterIn.PATH) @PathVariable("parameter") @my.project.validation.annotations.SomeAnnotation String parameter, 
         HttpServletRequest httpServletRequest
   );
}

Describe alternatives you've considered

I looked into this issue: #16054 which comes quite close to what I want, but it does unfortunately not cover my use case.

Updating the template on my end is obviously one way to go, but I believe that others might find this functionality of value.

Additional context

I am not sure if this is an apropriate feature request as I find the x-vendor-extensions quite flexible, as it opens up a lot of possibilities. If this is considered to be a good feature request, then it might be possible to add the functionality to the query parameters as well.