feat: open checkout page

src/preload/index.ts

@@ -223,6 +223,7 @@ contextBridge.exposeInMainWorld("electron", {
   getDefaultDownloadsPath: () => ipcRenderer.invoke("getDefaultDownloadsPath"),
   isPortableVersion: () => ipcRenderer.invoke("isPortableVersion"),
   openExternal: (src: string) => ipcRenderer.invoke("openExternal", src),
+  openCheckout: () => ipcRenderer.invoke("openCheckout"),
   showOpenDialog: (options: Electron.OpenDialogOptions) =>
     ipcRenderer.invoke("showOpenDialog", options),
   platform: process.platform,