See how Boundary would look with gofumpt applied (#853)

* See how Boundary would look with https://github.com/mvdan/gofumpt applied

Results of running `gofumpt -w -s .`

* Update tools file and Makefile for gofumpt

Co-authored-by: Jeff Mitchell <jeffrey.mitchell@gmail.com>

internal/gen/controller/api/services/host_set_service_grpc.pb.go

@@ -4,6 +4,7 @@ package services
 
 import (
 	context "context"
+
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
@@ -203,30 +204,36 @@ type HostSetServiceServer interface {
 }
 
 // UnimplementedHostSetServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedHostSetServiceServer struct {
-}
+type UnimplementedHostSetServiceServer struct{}
 
 func (UnimplementedHostSetServiceServer) GetHostSet(context.Context, *GetHostSetRequest) (*GetHostSetResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetHostSet not implemented")
 }
+
 func (UnimplementedHostSetServiceServer) ListHostSets(context.Context, *ListHostSetsRequest) (*ListHostSetsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListHostSets not implemented")
 }
+
 func (UnimplementedHostSetServiceServer) CreateHostSet(context.Context, *CreateHostSetRequest) (*CreateHostSetResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CreateHostSet not implemented")
 }
+
 func (UnimplementedHostSetServiceServer) UpdateHostSet(context.Context, *UpdateHostSetRequest) (*UpdateHostSetResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method UpdateHostSet not implemented")
 }
+
 func (UnimplementedHostSetServiceServer) DeleteHostSet(context.Context, *DeleteHostSetRequest) (*DeleteHostSetResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method DeleteHostSet not implemented")
 }
+
 func (UnimplementedHostSetServiceServer) AddHostSetHosts(context.Context, *AddHostSetHostsRequest) (*AddHostSetHostsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AddHostSetHosts not implemented")
 }
+
 func (UnimplementedHostSetServiceServer) SetHostSetHosts(context.Context, *SetHostSetHostsRequest) (*SetHostSetHostsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method SetHostSetHosts not implemented")
 }
+
 func (UnimplementedHostSetServiceServer) RemoveHostSetHosts(context.Context, *RemoveHostSetHostsRequest) (*RemoveHostSetHostsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method RemoveHostSetHosts not implemented")
 }