Description
Instead of generating a custom singleton pattern for every icon, we could use the built-in lazy functionality.
For example:

val ArrowLeft: ImageVector
    get() {
        if (_ArrowLeft != null) {
            return _ArrowLeft!!
        }
        _ArrowLeft = ImageVector.Builder(....).build()

        return _ArrowLeft!!
    }

private var _ArrowLeft: ImageVector? = null

becomes

val ArrowLeft: ImageVector by lazy {
     ImageVector.Builder(....).build()
}

A minor thing to be sure but it does:

1. Reduce indentation by one level
2. Make the singleton pattern clearer
3. Reduce the lines of code by 8 / per file which across something like 300 icons becomes significant

P.S. Love the plugin!