🔧 chore: add macOS-specific build script to package.json

- Introduced a new script `build:mac` in `package.json`. This script specifically targets building the application for macOS, streamlining the development process for macOS environments.
- The addition of this script allows for more efficient and focused builds when only a macOS version is needed, saving time and resources during the development cycle.

Author: mangledbottles

package.json

@@ -7,6 +7,7 @@
   "scripts": {
     "dev": "NODE_ENV=development vite",
     "build": "tsc && vite build && electron-builder -mwl",
+    "build:mac": "tsc && vite build && electron-builder -m",
     "lint": "eslint src --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
     "preview": "vite preview"
   },