fix a problem that sample games wouldn't launch

Add header '#include "hsp3dish.as"' to the source codes.
That fixed a problem that the programs of `sample/game/*.hsp` wouldn't launch because of lack of a header. Error message:

```
Execute from __hsptmp.ax runtime[hsp3](2).
sh: 1: /home/pi/Documents/ome/OpenHSP/./hsp3: not found
hsed: Process end 127.
```