Interrupt support

[m-kru]

Does RgGen support interrupts? I do not mean exactly the same way SystemRDL does, but is there any support for interrupts?

[Taichi Ishitani]

I think it's difficult to standardize IRQ implementation because there are various implementation policy.
Therefore, RgGen does not suppor IRQ feature directorly.

But there are useful bit field types for IRQ implementation such as w1c bit field type.