Bump to Beta v0.15 1 (#732)

package.json

 {
   "name": "dyad",
   "productName": "dyad",
-  "version": "0.14.0",
+  "version": "0.15.0-beta.1",
   "description": "My Electron application description",
   "main": ".vite/build/main.js",
   "repository": {