refactor(ffi): replace node-ffi-napi with koffi

- Switched to koffi due to node-ffi-napi's incompatibility with Node.js v16+ on Windows.

Author: huketo

biome.json

@@ -32,6 +32,9 @@
       },
       "complexity": {
         "noStaticOnlyClass": "off"
+      },
+      "suspicious": {
+        "noExplicitAny": "off"
       }
     }
   },

packages/anoncreds-nodejs/package.json

@@ -24,16 +24,11 @@
     "install": "node scripts/install.js"
   },
   "dependencies": {
-    "@2060.io/ffi-napi": "^4.0.9",
-    "@2060.io/ref-napi": "^3.0.6",
-    "@hyperledger/anoncreds-shared": "workspace:*",
-    "ref-array-di": "1.2.2",
-    "ref-struct-di": "1.1.1"
+    "koffi": "^2.14.0",
+    "@hyperledger/anoncreds-shared": "workspace:*"
   },
   "devDependencies": {
     "@types/node": "catalog:",
-    "@types/ref-array-di": "^1.2.3",
-    "@types/ref-struct-di": "^1.1.6",
     "typescript": "catalog:"
   },
   "binary": {