Display optional modules for extensions

public/scripts/extensions/caption/manifest.json

@@ -4,6 +4,7 @@
     "requires": [
         "caption"
     ],
+    "optional": [],
     "js": "index.js",
     "css": "style.css"
 }

public/scripts/extensions/dice/manifest.json

@@ -2,6 +2,7 @@
     "display_name": "D&D Dice",
     "loading_order": 5,
     "requires": [],
+    "optional": [],
     "js": "index.js",
     "css": "style.css"
 }

public/scripts/extensions/expressions/manifest.json

@@ -2,6 +2,9 @@
     "display_name": "Character Expressions",
     "loading_order": 6,
     "requires": [],
+    "optional": [
+        "classify"
+    ],
     "js": "index.js",
     "css": "style.css"
 }

public/scripts/extensions/floating-prompt/manifest.json

@@ -2,6 +2,7 @@
     "display_name": "Floating Prompt / Author's Note",
     "loading_order": 1,
     "requires": [],
+    "optional": [],
     "js": "index.js",
     "css": "style.css"
 }

public/scripts/extensions/memory/manifest.json

@@ -4,6 +4,7 @@
     "requires": [
         "summarize"
     ],
+    "optional": [],
     "js": "index.js",
     "css": "style.css"
 }