Use strings instead of IDs for `getLogsThread()`

### Discord Username

Not specified.

### Related Problem

As of now, [`botLogsChannelId`](https://github.com/anipalur/gce-a-levels-bot/blob/79c543970c4fd6cbaa94b9683e944362fa0154a8/src/config/channels-example.json#L3 "View where botLogsChannelId is defined.") and a logs thread ID must be passed when calling [`getLogsThread()`](https://github.com/anipalur/gce-a-levels-bot/blob/79c543970c4fd6cbaa94b9683e944362fa0154a8/src/tools/get-logs-thread.js#L12 "View the getLogsThread function file."). These IDs must be imported in every file the function is used in.

### Enhancement Description

Use a string parameter to specify the logs thread. This string is used to reference the corresponding logs thread ID.

For example, instead of

```js
const serverLogsThread = getLogsThread(client, botLogsChannelId, serverLogsThreadId);
```

call `getLogsThread()` like this:

```js
const serverLogsThread = getLogsThread(client, 'server-logs');
```

### Additional Information

None.

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