feat: improve resources_monitoring for OOM & OOD monitoring (#16241)

As requested for [this
issue](https://github.com/coder/internal/issues/245) we need to have a
new resource `resources_monitoring` in the agent.

It needs to be parsed from the provisioner and inserted into a new db
table.

coderd/rbac/policy/policy.go

@@ -302,4 +302,10 @@ var RBACPermissions = map[string]PermissionDefinition{
 			ActionUpdate: actDef("update IdP sync settings"),
 		},
 	},
+	"workspace_agent_resource_monitor": {
+		Actions: map[Action]ActionDefinition{
+			ActionRead:   actDef("read workspace agent resource monitor"),
+			ActionCreate: actDef("create workspace agent resource monitor"),
+		},
+	},
 }