feat: add flag to disable template insights (#20940)

Closes #20399 

To summarize the original commit messages:

- Do not log stats to the database.
- Return errors on the insight endpoints.
- Update the frontend to show those errors.
- Also fixes an issue with getting the user status count via codersdk,
since I added a test to ensure it was not disabled by this flag and it
was sending the wrong payload.

coderd/testdata/insights/template/disabled_week_deployment_wide.json.golden

@@ -0,0 +1,107 @@
+{
+  "report": {
+    "start_time": "2023-08-15T00:00:00Z",
+    "end_time": "2023-08-22T00:00:00Z",
+    "template_ids": [],
+    "active_users": 0,
+    "apps_usage": [
+      {
+        "template_ids": [],
+        "type": "builtin",
+        "display_name": "Visual Studio Code",
+        "slug": "vscode",
+        "icon": "/icon/code.svg",
+        "seconds": 0,
+        "times_used": 0
+      },
+      {
+        "template_ids": [],
+        "type": "builtin",
+        "display_name": "JetBrains",
+        "slug": "jetbrains",
+        "icon": "/icon/intellij.svg",
+        "seconds": 0,
+        "times_used": 0
+      },
+      {
+        "template_ids": [],
+        "type": "builtin",
+        "display_name": "Web Terminal",
+        "slug": "reconnecting-pty",
+        "icon": "/icon/terminal.svg",
+        "seconds": 0,
+        "times_used": 0
+      },
+      {
+        "template_ids": [],
+        "type": "builtin",
+        "display_name": "SSH",
+        "slug": "ssh",
+        "icon": "/icon/terminal.svg",
+        "seconds": 0,
+        "times_used": 0
+      },
+      {
+        "template_ids": [],
+        "type": "builtin",
+        "display_name": "SFTP",
+        "slug": "sftp",
+        "icon": "/icon/terminal.svg",
+        "seconds": 0,
+        "times_used": 0
+      }
+    ],
+    "parameters_usage": []
+  },
+  "interval_reports": [
+    {
+      "start_time": "2023-08-15T00:00:00Z",
+      "end_time": "2023-08-16T00:00:00Z",
+      "template_ids": [],
+      "interval": "day",
+      "active_users": 0
+    },
+    {
+      "start_time": "2023-08-16T00:00:00Z",
+      "end_time": "2023-08-17T00:00:00Z",
+      "template_ids": [],
+      "interval": "day",
+      "active_users": 0
+    },
+    {
+      "start_time": "2023-08-17T00:00:00Z",
+      "end_time": "2023-08-18T00:00:00Z",
+      "template_ids": [],
+      "interval": "day",
+      "active_users": 0
+    },
+    {
+      "start_time": "2023-08-18T00:00:00Z",
+      "end_time": "2023-08-19T00:00:00Z",
+      "template_ids": [],
+      "interval": "day",
+      "active_users": 0
+    },
+    {
+      "start_time": "2023-08-19T00:00:00Z",
+      "end_time": "2023-08-20T00:00:00Z",
+      "template_ids": [],
+      "interval": "day",
+      "active_users": 0
+    },
+    {
+      "start_time": "2023-08-20T00:00:00Z",
+      "end_time": "2023-08-21T00:00:00Z",
+      "template_ids": [],
+      "interval": "day",
+      "active_users": 0
+    },
+    {
+      "start_time": "2023-08-21T00:00:00Z",
+      "end_time": "2023-08-22T00:00:00Z",
+      "template_ids": [],
+      "interval": "day",
+      "active_users": 0
+    }
+  ]
+}

coderd/testdata/insights/user-activity/disabled_week_deployment_wide.json.golden

@@ -0,0 +1,8 @@
+{
+  "report": {
+    "start_time": "2023-08-15T00:00:00Z",
+    "end_time": "2023-08-22T00:00:00Z",
+    "template_ids": [],
+    "users": []
+  }
+}