Parse external request id from request headers, and print it in access log (#22906)

Close: #22890.

---
### Configure in .ini file:
```ini
[log]
REQUEST_ID_HEADERS = X-Request-ID, X-Trace-Id
```

### Params in Request Header
```
X-Trace-ID: trace-id-1q2w3e4r
```

![image](https://user-images.githubusercontent.com/33891828/218665296-8fd19a0f-ada6-4236-8bdb-f99201c703e8.png)



### Log output:

![image](https://user-images.githubusercontent.com/33891828/218665225-cc242a57-4ffc-449a-a1f6-f45ded0ead60.png)

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -881,7 +881,13 @@ Default templates for project boards:
   - `Identity`: the SignedUserName or `"-"` if not logged in.
   - `Start`: the start time of the request.
   - `ResponseWriter`: the responseWriter from the request.
+  - `RequestID`: the value matching REQUEST_ID_HEADERS（default: `-`, if not matched）.
   - You must be very careful to ensure that this template does not throw errors or panics as this template runs outside of the panic/recovery script.
+- `REQUEST_ID_HEADERS`: **\<empty\>**: You can configure multiple values that are splited by comma here. It will match in the order of configuration, and the first match will be finally printed in the access log.
+  - e.g.
+  - In the Request Header:        X-Request-ID: **test-id-123**
+  - Configuration in app.ini:     REQUEST_ID_HEADERS = X-Request-ID
+  - Print in log:                 127.0.0.1:58384 - - [14/Feb/2023:16:33:51 +0800]  "**test-id-123**" ...
 
 ### Log subsections (`log.name`, `log.name.*`)
 

docs/content/doc/advanced/config-cheat-sheet.zh-cn.md

@@ -262,7 +262,22 @@ test01.xls: application/vnd.ms-excel; charset=binary
 
 - `ROOT_PATH`: 日志文件根目录。
 - `MODE`: 日志记录模式，默认是为 `console`。如果要写到多个通道，用逗号分隔
-- `LEVEL`: 日志级别，默认为`Trace`。
+- `LEVEL`: 日志级别，默认为 `Trace`。
+- `DISABLE_ROUTER_LOG`: 关闭日志中的路由日志。
+- `ENABLE_ACCESS_LOG`: 是否开启 Access Log, 默认为 false。
+- `ACCESS_LOG_TEMPLATE`: `access.log` 输出内容的模板，默认模板：**`{{.Ctx.RemoteAddr}} - {{.Identity}} {{.Start.Format "[02/Jan/2006:15:04:05 -0700]" }} "{{.Ctx.Req.Method}} {{.Ctx.Req.URL.RequestURI}} {{.Ctx.Req.Proto}}" {{.ResponseWriter.Status}} {{.ResponseWriter.Size}} "{{.Ctx.Req.Referer}}\" \"{{.Ctx.Req.UserAgent}}"`**
+  模板支持以下参数:
+  - `Ctx`: 请求上下文。
+  - `Identity`: 登录用户名，默认: “`-`”。
+  - `Start`: 请求开始时间。
+  - `ResponseWriter`:
+  - `RequestID`: 从请求头中解析得到的与 `REQUEST_ID_HEADERS` 匹配的值，默认: “`-`”。
+  - 一定要谨慎配置该模板，否则可能会引起panic.
+- `REQUEST_ID_HEADERS`: 从 Request Header 中匹配指定 Key，并将匹配到的值输出到 `access.log` 中(需要在 `ACCESS_LOG_TEMPLATE` 中指定输出位置)。如果在该参数中配置多个 Key， 请用逗号分割，程序将按照配置的顺序进行匹配。
+  - 示例：
+  - 请求头：       X-Request-ID: **test-id-123**
+  - 配置文件：     REQUEST_ID_HEADERS = X-Request-ID
+  - 日志输出：     127.0.0.1:58384 - - [14/Feb/2023:16:33:51 +0800]  "**test-id-123**" ...
 
 ## Cron (`cron`)