TimeAddition.kt

private fun addTime(value: String) {
        val intValue = value.toInt()
        val hours = TimeUnit(
            leftDigit = timeState.value.hours.rightDigit,
            rightDigit = timeState.value.mins.leftDigit,
        )
        val mins = TimeUnit(
            leftDigit = timeState.value.mins.rightDigit,
            rightDigit = timeState.value.secs.leftDigit,
        )
        val secs = TimeUnit(
            leftDigit = timeState.value.secs.rightDigit,
            rightDigit = intValue,
        )
        timeState.value = timeState.value.copy(
            hours = hours,
            mins = mins,
            secs = secs
        )
    }