Handle :: in conflicting Anchor type names

[lorisleiva]

When generating an Anchor IDL that exports conflicting types, it will use the fully qualified name — e.g. some::crate::MyType — instead of the type name alone — e.g. MyType.

Since Codama only support camel-cased names, this is not compatible with the standard. The side-effect is that we have JavaScript generated imports that look like import { some::crate::MyType } from '../types'.

Two possible solutions:

• Option A. We adjust the camelCase function so that it knows how to handle special characters like :: and concatenate the segments properly — e.g. some::crate::MyType becomes SomeCrateMyType.
• Option B. We try and identify :: characters in the nodes-from-anchor package since this pattern should only ever happen on an IDL coming from Anchor such that it has conflicting types.