Add prototype of pipeline api using connect

This includes refactoring of the http listener to use
a custom mux.

go.mod

@@ -4,9 +4,12 @@ go 1.19
 
 require (
 	git.ohea.xyz/golang/config v0.0.0-20220915224621-b9debd233173
+	github.com/bufbuild/connect-go v1.4.1
 	github.com/go-git/go-git/v5 v5.4.3-0.20220529141257-bc1f419cebcf
 	github.com/go-playground/webhooks/v6 v6.0.1
 	github.com/op/go-logging v0.0.0-20160315200505-970db520ece7
+	golang.org/x/net v0.2.0
+	google.golang.org/protobuf v1.28.1
 	nhooyr.io/websocket v1.8.7
 )
 
@@ -32,8 +35,8 @@ require (
 	github.com/xanzy/ssh-agent v0.3.2 // indirect
 	golang.org/x/crypto v0.2.1-0.20221112162523-6fad3dfc1891 // indirect
 	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
-	golang.org/x/net v0.2.0 // indirect
 	golang.org/x/sys v0.2.0 // indirect
+	golang.org/x/text v0.4.0 // indirect
 	golang.org/x/tools v0.1.12 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect