Update development scripts and add macOS icon assets

- Renamed backend development script from `dev:backend` to `dev:server` for clarity.
- Added new macOS icon assets and configuration files for the application.
- Enhanced App component to improve server management during production and development modes.
- Updated ConnectionForm to reset state after successful submission and conditionally render the update button.
- Implemented database initialization on application startup in the backend.

AppIcon.icon/icon.json

@@ -0,0 +1,36 @@
+{
+  "fill" : "automatic",
+  "groups" : [
+    {
+      "layers" : [
+        {
+          "blend-mode" : "normal",
+          "glass" : true,
+          "image-name" : "Voicebox.png",
+          "name" : "Voicebox",
+          "position" : {
+            "scale" : 0.37,
+            "translation-in-points" : [
+              -0.12338405356129378,
+              297.27705195772353
+            ]
+          }
+        }
+      ],
+      "shadow" : {
+        "kind" : "neutral",
+        "opacity" : 0.5
+      },
+      "translucency" : {
+        "enabled" : true,
+        "value" : 0.5
+      }
+    }
+  ],
+  "supported-platforms" : {
+    "circles" : [
+      "watchOS"
+    ],
+    "squares" : "shared"
+  }
+}