Merge endpoint parameters specification if OpenApi annotation is provided

[besir]

Example:

	/**
	 * @Path("/")
	 * @Method("GET")
	 * @Tag(name="@authenticated", value="User")
	 *
	 * @RequestParameters({
	 *     @RequestParameter(name="filters", in="query", required=false, description="Filters", type="object"),
	 * })
	 *
	 * @RequestBody("\App\Api\Entity\Request\Employee\EmployeeList")
	 *
	 *
	 * @OpenApi("
	 *    summary: Get employees
	 *    operationId: getEmployees
	 *    tags:
	 *       - Employee
	 *    security:
	 *       - BearerAuth: []
	 *    parameters:
	 *     - in: query
	 *       name: filters
	 *       schema:
	 *         type: object
	 *         items:
	 *           type: string
	 *       style: deepObject
	 *       example: {'foo': 'bar'}
	 *    responses:
	 *       200:
	 *           description: Emploeey list
	 *           content:
	 *               application/json:
	 *                   example:
	 *       default:
	 *           description: unexpected error
	 * ")
     */
	public function getEmployees(ApiRequest $request, ApiResponse $response): ApiResponse
	{
		//...

		return $response->writeJsonBody([]);
	}