feat: mount pprof and metrics to /api/v2/debug for admins (#20353)

Adds the following debug routes for people with the `debug_info:read`
permission:
- `/api/v2/debug/pprof` for `net/http/pprof`
    - `/`
    - `/cmdline`
    - `/profile`
    - `/symbol`
    - `/trace`
    - `/*`
- `/api/v2/debug/metrics` for Prometheus metrics

coderd/coderdtest/swaggerparser.go

@@ -160,8 +160,9 @@ func VerifySwaggerDefinitions(t *testing.T, router chi.Router, swaggerComments [
 		t.Run(method+" "+route, func(t *testing.T) {
 			t.Parallel()
 
-			// This route is for compatibility purposes and is not documented.
-			if route == "/workspaceagents/me/metadata" {
+			// Wildcard routes break the swaggo parser, so we do not document
+			// them.
+			if strings.HasSuffix(route, "/*") {
 				return
 			}