[FEATURE]: Support for multiple input configurations

[shalousun]

Concisely describe the proposed feature Ability to configure multiple log collection inputs in one yaml configuration file

可以在一个yaml配置文件中配置多个input

For example

enable: true
inputs:
   - Type: file_log
     LogPath: /data/logs/StarRocks
     FilePattern: '*.log'
   - Type: file_log
     LogPath: /data/starrocks/
     FilePattern: '*.INFO'
flushers:
   - Type: flusher_stdout
     OnlyStdout: true

The log collection input configuration of community open source components like beats and fluent-bit is also more like the above method, so the configuration file is easier to use.

beats、fluent-bit开源组件的采集输入配置也更像上面的这种方式，这样配置文件使用也简单一些。 Describe the solution you'd like (if any)

Additional comments

[messixukejia]

@yyuuttaaoo 关注下，后续考虑支持下

[PungYoung]

我刚刚也发现好像不支持多个input，但是input是个数组。

[PungYoung]

user_yaml_config.d/下可以创建多个yaml，支持热加载