Import googleapis (LatLng) from Buf Schema Registry

[kevinmichaelchen]

BSR is a dependency manager for protobuf. It's like NPM for protobufs.

See googleapis module in BSR.

• Fix unit tests
• Add validation for LatLng and Money with ozzo, since we can no longer use Envoy validation annotations
• Import Money

When will Buf's standard library be ready?

You may already be familiar with Protobuf's Well-Known Types, but these largely act as thin wrappers around primitive values to support zeroable values, such as the BoolValue.

These types are a good start, but we can do so much more with a true standard library of common API definitions. Developers around the world are reinventing the wheel every time they need to define their PostalAddress, Currency, and URI messages. Buf will address this by defining a generic set of such types that can be dropped-in to your application so that you can focus on writing your business logic.