Rename IO traits to IcebergFileRead or IcebergRead?

[Xuanwo]

          Maybe we could call this `IcebergFileRead` or `IcebergRead`? I suppose that's a bit redundant as it would be clear that it is from us by navigating to the `use` statement where it gets imported, but I'm just conscious that there are a lot of `Read` and `Write` traits dotted around and we could make it easier to see which one is ours at-a-glance where ever it is used in the future.

Originally posted by @sdd in #364 (comment)

[Xuanwo]

cc @liurenjie1024 @Fokko, what do you think about this?

[liurenjie1024]

To be honest I'm netural to this, is there any reason why we need to do this?

[Xuanwo]

To be honest I'm netural to this, is there any reason why we need to do this?

I'm fine with this too. I'm going to let this issue open for more feedback.

[Xuanwo]

No actionable task yet, let's close.