Move to npm for development and packaging

I had to hack the package.json to force `electron-prebuilt` to use a 32-bit binary - everything else should be fairly out of the box

package.json

@@ -0,0 +1,45 @@
+{
+  "name": "openfusionclient",
+  "version": "1.3.1",
+  "description": "OpenFusionClient",
+  "main": "index.js",
+  "scripts": {
+    "postinstall": "npx patch-package && npm explore electron-prebuilt -- npm run postinstall",
+    "start": "electron .",
+    "build": "node build.js",
+    "pack": "electron-builder --dir",
+    "dist": "electron-builder"
+  },
+  "author": "OpenFusion Contributors",
+  "license": "MIT",
+  "devDependencies": {
+    "electron-prebuilt": "^0.31.2",
+    "patch-package": "^6.4.7",
+    "electron-builder": "^22.10.5"
+  },
+  "build": {
+    "appId": "xyz.openfusion.client",
+    "productName": "OpenFusionClient",
+    "copyright": "© 2020-2021 OpenFusion Contributors",
+    "electronDownload": {
+      "version": "0.31.2",
+      "platform": "win32",
+      "arch": "ia32"
+    },
+    "electronVersion": "0.31.2",
+    "win": {
+      "asar": false
+    },
+    "files": [
+      "!patches${/*}",
+      "!default_app${/*}",
+      "!.npmrc"
+    ],
+    "extraFiles": [
+      {
+        "from": "build/utils",
+        "to": "utils"
+      }
+    ]
+  }
+}