Copy pkg and test to internal and deprecate original

[MrAlias]

Part of #270; this moves code that does not need to be exported into the internal package.

• Copy existing pkg and test packages into internal package
• Deprecate existing pkg and test packages and modules.
• Update tooling to use new package

[edeNFed]

@MrAlias can we leave a few APIs in the pkg directory? We are using the Go auto instrumentation as a library and moving everything to internal will break our code: https://github.com/keyval-dev/odigos/blob/main/odiglet/pkg/ebpf/objects.go

[MrAlias]

@MrAlias can we leave a few APIs in the pkg directory? We are using the Go auto instrumentation as a library and moving everything to internal will break our code: https://github.com/keyval-dev/odigos/blob/main/odiglet/pkg/ebpf/objects.go

Sure, I'll take a look and update.

[MrAlias]

@edeNFed it seems like you are already working with a fork of this project: https://github.com/keyval-dev/odigos/blob/acf1ec5daa52fb56a551ee47ef22bb0515e1ddad/odiglet/go.mod#L98. I'm not able to find things like NewControllerWithServiceName in the existing packages.

This makes me think that we need to work on our API so these kinds of workarounds are not needed. I have thoughts on a revised and simpiler API, but don't want to make that proposal in this PR. What do you think about keeping this PR as is, tracking the revised API design in a new issue, and adding the API to the top-level go.opentelemetry.io/auto package?

[edeNFed]

Sure sounds great