Confusing distrax.Chain syntax

The syntax for constructing a chain is very confusing and inconsistent with most other libraries which build chains of functions.


For example:

```
  bijector = distrax.Chain([
      distrax.ScalarAffine(shift = shift, scale = scale),
      distrax.Tanh()
  ])
```

first applies Tanh and then applies ScalarAffine. Intuitively it should be the other way around.