chore: Split proto breaking change detection config (#2212)

We generally care about preserving JSON compatibility for protobuf
files, but for some files, where we only use pure gRPC, we only
care about preserving wire compatibility.

Split our buf breaking invocation into two invocations, one that checks
for WIRE_JSON compatibility, and one that checks only for WIRE
compatibility. The former check ignores protos in controller/servers,
since they do not need to adhere to this stricter definition.

Makefile

@@ -211,7 +211,13 @@ protobuild:
 .PHONY: protolint
 protolint:
 	@buf lint
-	@buf breaking --against 'https://github.com/hashicorp/boundary.git#branch=stable-website'
+	# First check all protos except controller/servers for WIRE_JSON compatibility
+	cd internal/proto && buf breaking --against 'https://github.com/hashicorp/boundary.git#branch=stable-website,subdir=internal/proto' \
+		--exclude-path=controller/servers \
+		--config buf.breaking.json.yaml
+	# Next check all protos for WIRE compatibility. WIRE is a subset of WIRE_JSON so we don't need to exclude any files.
+	cd internal/proto && buf breaking --against 'https://github.com/hashicorp/boundary.git#branch=stable-website,subdir=internal/proto' \
+		--config buf.breaking.wire.yaml
 
 .PHONY: website
 # must have nodejs and npm installed