fix staging of aisleriot

"FAILED: install script '/wrkdirs/usr/ports/games/aisleriot/work/aisleriot-3.22.14/data/meson_desktopfile.py /usr/local/share/applications sol.desktop' exit code 127, stopped"

• explicitly declare build-dependency on python
• shebangfix included python-scripts, as they are referencing "python3", which we only install with the python3 meta-package (which is not pulled in when depending on python)