config.txt: QMMaps content

`config.txt` includes the following section:
```

alpine assault
desert fury
final crusade
heartland shield

```

I don't understand yet what should really be there. For now, I've left a visible in-game name of one map.

See `// TODO[#8]` in the code for more details.

Start with the QMMaps section in config.txt, then locate the code comment marked TODO[#8]. Trace how the listed map names are read and used in-game, and establish the intended content and completion criteria before changing the configuration.

Written by the indexing model from the issue text.