fix: list the artwork mame2003-plus ships

Seven artwork zips from the core's metadata/artwork are read from mame2003-plus/artwork/ when Display Artwork is on, the default (artwork.c:2242-2258).

emulators/mame2003_plus.yml

@@ -100,6 +100,84 @@ files:
     source_ref: "src/datafile.c:327,638"
     note: "technical driver information, appended to history display"
 
+  # Artwork the core repository ships in metadata/artwork. artwork_load_artwork_file
+  # opens <driver>.art inside artwork/<driver>.zip, walking the clone chain, when
+  # the Display Artwork core option keeps its enabled default.
+  # ref: src/artwork.c:2242-2258, src/fileio.c:246-248, src/mame2003/core_options.c:223-236
+
+  - name: "blueshrk.zip"
+    path: "mame2003-plus/artwork/blueshrk.zip"
+    required: false
+    category: game_data
+    size: 925914
+    sha1: "4317f301d6e4117dfde42b33dfaf73a2b25f43c1"
+    md5: "4659968035d462be471fdfb46b604696"
+    description: "Blue Shark backdrop"
+    source_ref: "src/artwork.c:2242-2258, src/fileio.c:246-248"
+    note: >
+      metadata/artwork of the core repository at source_commit. The core zip
+      carries the library alone.
+
+  - name: "frogs.zip"
+    path: "mame2003-plus/artwork/frogs.zip"
+    required: false
+    category: game_data
+    size: 2832731
+    sha1: "cdff29398e76b92d93825d96c0f9cae5bb6b3400"
+    md5: "e30e8ef4631596e25466523b97fee19f"
+    description: "Frogs backdrop"
+    source_ref: "src/artwork.c:2242-2258, src/fileio.c:246-248"
+
+  - name: "invaders.zip"
+    path: "mame2003-plus/artwork/invaders.zip"
+    required: false
+    category: game_data
+    size: 4324198
+    sha1: "4b18db526ca907707fd888385d907a7a585935d0"
+    md5: "23d65ad40ac1f2121fe35fe0c7893721"
+    description: "Space Invaders moon backdrop"
+    source_ref: "src/artwork.c:2242-2258, src/fileio.c:246-248"
+
+  - name: "omegrace.zip"
+    path: "mame2003-plus/artwork/omegrace.zip"
+    required: false
+    category: game_data
+    size: 1754523
+    sha1: "1ca22afdfefcfa5943742e988c45c1fc0e1124bd"
+    md5: "255155cf3f9912c92be8f813e8112a54"
+    description: "Omega Race backdrop"
+    source_ref: "src/artwork.c:2242-2258, src/fileio.c:246-248"
+
+  - name: "skydiver.zip"
+    path: "mame2003-plus/artwork/skydiver.zip"
+    required: false
+    category: game_data
+    size: 117241
+    sha1: "a0548e37e76a21fb37005cff944319ee63f93d1e"
+    md5: "95e05db7f8fa208daafd7b0d32041db8"
+    description: "Sky Diver backdrop, cloud overlay and lamp artwork"
+    source_ref: "src/artwork.c:2242-2258, src/fileio.c:246-248"
+
+  - name: "solarq.zip"
+    path: "mame2003-plus/artwork/solarq.zip"
+    required: false
+    category: game_data
+    size: 1342645
+    sha1: "ff532cee1de69668b0c68238aff0c16813640476"
+    md5: "b4b70db555dfb48b91a067eea747c771"
+    description: "Solar Quest backdrop"
+    source_ref: "src/artwork.c:2242-2258, src/fileio.c:246-248"
+
+  - name: "warrior.zip"
+    path: "mame2003-plus/artwork/warrior.zip"
+    required: false
+    category: game_data
+    size: 1125335
+    sha1: "57f89bbac39d8071e45c87f97e9b918f31d21994"
+    md5: "29fe11717016182d446ca6af56a08f75"
+    description: "Warrior backdrop"
+    source_ref: "src/artwork.c:2242-2258, src/fileio.c:246-248"
+
   # ---------------------------------------------------------
   # SNK Neo Geo MVS/AES (neogeo.zip)
   # ---------------------------------------------------------