v0.5.0 : change of smithy => protobuf semantics

This release aligns the implementation of the smithy => protobuf translation on the semantics described in alloy.

The new semantics require are less opinionated (with respect to wrapping, in particular) and re-use "well-known" definitions from the protobuf ecosystem.

What's Changed

• Add snapshot publishing by @lewisjkl in #229
• Move scala code in proto module relevant directories by @Baccata in #231
• Update jackson-databind to 2.15.4 by @scala-steward in #233
• Re-implement proto-translation based on newer alloy specifications by @Baccata in #232

Full Changelog: v0.4.0...v0.5.0