feat: Add VS Code launch/task configurations and refactor app icon and resource management.

.vscode/tasks.json

@@ -0,0 +1,38 @@
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "swift: Build Debug Mole (app)",
+      "type": "shell",
+      "command": "swift",
+      "args": ["build", "-c", "debug"],
+      "options": {
+        "cwd": "${workspaceFolder}/app"
+      },
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "presentation": {
+        "reveal": "always",
+        "panel": "shared"
+      },
+      "problemMatcher": ["$swiftc"]
+    },
+    {
+      "label": "swift: Build Release Mole (app)",
+      "type": "shell",
+      "command": "swift",
+      "args": ["build", "-c", "release"],
+      "options": {
+        "cwd": "${workspaceFolder}/app"
+      },
+      "group": "build",
+      "presentation": {
+        "reveal": "always",
+        "panel": "shared"
+      },
+      "problemMatcher": ["$swiftc"]
+    }
+  ]
+}