chore: switch scaffolder to a single module (#1571)

Previously the repo had sub-modules to separate extensions, but it
turned out to be very irritating to maintain.

go.mod

@@ -7,8 +7,7 @@ require (
 	connectrpc.com/grpcreflect v1.2.0
 	connectrpc.com/otelconnect v0.7.0
 	github.com/BurntSushi/toml v1.3.2
-	github.com/TBD54566975/scaffolder v0.8.0
-	github.com/TBD54566975/scaffolder/extensions/javascript v0.8.0
+	github.com/TBD54566975/scaffolder v1.0.0
 	github.com/alecthomas/assert/v2 v2.9.0
 	github.com/alecthomas/atomic v0.1.0-alpha2
 	github.com/alecthomas/concurrency v0.0.2
@@ -101,7 +100,7 @@ require (
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/danieljoos/wincred v1.2.0 // indirect
 	github.com/dlclark/regexp2 v1.10.0 // indirect
-	github.com/dop251/goja v0.0.0-20231027120936-b396bb4c349d // indirect
+	github.com/dop251/goja v0.0.0-20240516125602-ccbae20bcec2 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-sourcemap/sourcemap v2.1.3+incompatible // indirect