fix: file every platform system under a known id

Thirty platform system ids, such as sufami, pokemini, vsmile, and
Recalbox's comma-joined msx1,msx2, matched no system any profile
names, so no core file was attributed to them and --system missed them.
The scraper maps now carry those names, and a test holds every platform
system to a profile system apart from two named folds.

scripts/scraper/retrodeck_scraper.py

@@ -153,6 +153,7 @@ SYSTEM_SLUG_MAP: dict[str, str | None] = {
     "dragon": "dragon64",
     "tanodragon": "dragon64",
     "pico8": "pico8",
+    "vsmile": "vtech-vsmile",
     "wolfenstein": "wolfenstein-3d",
     "zxspectrum": "sinclair-zx-spectrum",
 }