feat: collect scummvm and fbneo pinned revisions

RetroArch pins 23 ScummVM engine-data files and FBNeo's hiscore.dat at
revisions upstream history still holds; they are now collected. The
two profiles claim the revision their core is built from, so the pack
keeps serving the core its own files and the pins sit beside them.

emulators/fbneo.yml

@@ -1462,7 +1462,9 @@ files:
   - name: "hiscore.dat"
     path: "fbneo/hiscore.dat"
     required: false
-    note: "High score database, enables persistent high scores across all arcade games"
+    sha1: "30c6ad697439de7c2158192ecdb48f5edd37478e"
+    md5: "f5cdce5b3749d673ad8f073ccc7371e4"
+    note: "High score database, enables persistent high scores across all arcade games. The hash is that of metadata/hiscore.dat at source_commit."
     source_ref: "src/burn/hiscore.cpp:407"
 
   # Large audio samples (>50MB, stored as release assets)