Copy wspb into sdk in preparation for moving it out of main (#4023)

sdk/go.mod

@@ -1,6 +1,8 @@
 module github.com/hashicorp/boundary/sdk
 
-go 1.19
+go 1.21
+
+toolchain go1.21.3
 
 require (
 	github.com/hashicorp/eventlogger v0.2.6-0.20231025104552-802587e608f0
@@ -13,6 +15,7 @@ require (
 	google.golang.org/genproto/googleapis/api v0.0.0-20231030173426-d783a09b4405
 	google.golang.org/grpc v1.59.0
 	google.golang.org/protobuf v1.31.0
+	nhooyr.io/websocket v1.8.10
 )
 
 require (
@@ -20,9 +23,12 @@ require (
 	github.com/Masterminds/sprig/v3 v3.2.3 // indirect
 	github.com/hashicorp/go-kms-wrapping/plugin/v2 v2.0.5 // indirect
 	github.com/hashicorp/go-secure-stdlib/base62 v0.1.2 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
 	github.com/shopspring/decimal v1.3.1 // indirect
 	github.com/spf13/cast v1.5.0 // indirect
+	go.uber.org/goleak v1.1.12 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20231016165738-49dd2c1f3d0b // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 )
 
 require (
@@ -30,7 +36,7 @@ require (
 	github.com/armon/go-radix v1.0.0 // indirect
 	github.com/bgentry/speakeasy v0.1.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/fatih/color v1.14.1 // indirect
+	github.com/fatih/color v1.15.0 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/google/uuid v1.3.1 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
@@ -49,7 +55,7 @@ require (
 	github.com/imdario/mergo v0.3.13 // indirect
 	github.com/jefferai/isbadcipher v0.0.0-20190226160619-51d2077c035f // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.17 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/mitchellh/cli v1.1.5 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/go-testing-interface v1.14.1 // indirect