feat: add props system and refactor asset library architecture

messages/en/assetHub.json

@@ -9,10 +9,13 @@
     "allAssets": "All Assets",
     "characters": "Characters",
     "locations": "Locations",
+    "props": "Props",
     "voices": "Voices",
     "addCharacter": "Add Character",
     "addLocation": "Add Location",
+    "addProp": "Add Prop",
     "addVoice": "Add Voice",
+    "addAsset": "New Asset",
     "downloadAll": "Download All",
     "downloadAllTitle": "Download All Image Assets as ZIP",
     "downloading": "Packing...",
@@ -37,7 +40,10 @@
     "confirmDeleteFolder": "Delete this folder? Assets inside will be moved to uncategorized.",
     "confirmDeleteCharacter": "Delete this character? This action cannot be undone.",
     "confirmDeleteLocation": "Delete this location? This action cannot be undone.",
+    "confirmDeleteProp": "Delete this prop? This action cannot be undone.",
     "confirmDeleteVoice": "Delete this voice? This action cannot be undone.",
+    "locationLabel": "Location",
+    "propLabel": "Prop",
     "voiceName": "Voice Name",
     "voiceNamePlaceholder": "Enter voice name",
     "voiceNameRequired": "Please enter a voice name",
@@ -104,4 +110,4 @@
         "dropOrClick": "Drop image or click to upload",
         "supportedFormats": "JPG, PNG supported"
     }
-}
+}