feat(cli): add coder exp tasks list (#19496)

Fixes coder/internal#892
Fixes coder/internal#896

Example output:

```
❯ coder exp task list
ID                                    NAME                         STATUS   STATE  STATE CHANGED  MESSAGE
a7a27450-ca16-4553-a6c5-9d6f04808569  task-hardcore-herschel-bd08  running  idle   5h22m3s ago    Listed root directory contents, working directory reset
50f92138-f463-4f2b-abad-1816264b065f  task-musing-dewdney-f058     running  idle   6h3m8s ago     Completed arithmetic calculation
```

coderd/coderd.go

@@ -1008,10 +1008,10 @@ func New(options *Options) *API {
 		r.Route("/tasks", func(r chi.Router) {
 			r.Use(apiRateLimiter)
 
+			r.Get("/", api.tasksList)
+
 			r.Route("/{user}", func(r chi.Router) {
 				r.Use(httpmw.ExtractOrganizationMembersParam(options.Database, api.HTTPAuth.Authorize))
-
-				r.Get("/", api.tasksList)
 				r.Get("/{id}", api.taskGet)
 				r.Post("/", api.tasksCreate)
 			})