Why not transform package name to CamelCase?

Currently, a package `my.under_scored.package` will be translated to `My.Under_scored.Package` in Elixir by exprotobuf.

The protobuf's official documents shows that the package name should follow underscore style while it's recommend to use CamelCase in Elixir module name.

So I think maybe `my.under_scored.package` should be translated to `My.UnderScored.Package` in Elixir.

Start by locating the exprotobuf entry point that translates protobuf package names into Elixir module names, then inspect any nearby tests for package conversion. The change is done when a package such as my.under_scored.package produces My.UnderScored.Package while preserving the expected handling of other package components.

Written by the indexing model from the issue text.