Making new oneshot timer API that can register plural callback-functions

[ShunichiroNakamura]

Detail

This issue requests to make new oneshot timer API (in the system timer FIT) that can register plural callback-functions.
It also needs to chnge sample codes of the following Wiki page.
https://github.com/renesas/rx72n-envision-kit/wiki/1-SDHI-SD%E3%82%AB%E3%83%BC%E3%83%89%E3%83%89%E3%83%A9%E3%82%A4%E3%83%90-%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%B7%E3%82%B9%E3%83%86%E3%83%A0

    if(SYS_TIME_SUCCESS != wait_milliseconds(100))
    {
        return SDC_SD_ERR;
    }

Background

There is oneshot timer API in CMT FIT, but this API occupy one CMT channel resource by one call.
New oneshot timer API is hoped to register plural callback-functions for one CMT channel such as
"R_SYS_TIME_RegisterPeriodicCallback()".