fix #2435

[bensonfx]

1. support header path generate
2. fix path type path generate

test api:

type UserLoginReq {
    Name string `json:"name"`
    Id int64 `path:"id"`
    Email string `form:"email,optional"`
    Nonce string `header:"nonce,optional"`
}
type ReplyStatus {
    Code int `json:"code"`
    Msg int `json:"msg"`
}
@server(
    prefix: api
    group: user
)
service demo-api {
    @doc "user login"
    @handler Login
    get /user/login/:id (UserLoginReq) returns (ReplyStatus)
}

// demo.ts
import * as components from "./demoComponents"
export * from "./demoComponents"

/**
 * @description "user login"
 * @param params
 * @param req
 * @param headers
 */
export function login(params: components.UserLoginReqParams, req: components.UserLoginReq, headers: components.UserLoginReqHeaders, id: number) {
	return webapi.get<components.ReplyStatus>(`/api/user/login/${id}`, params, req, headers)
}

//demoComponents.ts

// Code generated by goctl. DO NOT EDIT.

export interface UserLoginReq {
	name: string
}
export interface UserLoginReqParams {
	email: string
}
export interface UserLoginReqHeaders {
	nonce: string
}

export interface ReplyStatus {
	code: number
	msg: number
}

[kevwan]

LGTM.