`joy_mapcommand.c`

### What it is for
Takes a text file and creates a copy where every line is prefixed with:

```text
map 
```

Useful for turning a plain list of map names into a command list for console or script use.

### Usage
After compiling:
```bash
joy_mapcommand.exe <file>
```

### Arguments
- `<file>`  
  Required. Input text file.

### Input / output behavior
If the input file is:
- `maps.txt`

the output file becomes:
- `mapcommand maps.txt`

in the same directory.

Each line:
- `dm_city1`

becomes:
- `map dm_city1`

### Output
Writes a new file with the prefix `mapcommand ` added to the filename.