Improve packaging of the Electron app

[spa5k]

This pull request improves the packaging of the Electron app by making the following changes:

• Added a homepage URL to the package.json file.

• Updated the "copy" script in the package.json file to include copying the necessary files from the web directory.

• Updated the "prepare" script in the package.json file to clean the web directory and copy the necessary files.

• Updated the "dist" script in the package.json file to run the "prepare" script before building the Electron app.

• Updated the "linux" script in the package.json file to run the "prepare" script before building the Linux version of the Electron app.

• Updated the "win" script in the package.json file to run the "prepare" script before building the Windows version of the Electron app.

• Updated the "mac" script in the package.json file to run the "prepare" script before building the macOS version of the Electron app.

• Updated the "build" section in the package.json file to include the necessary files and folders for the Electron app.

• Updated the "main.ts" file to remove unnecessary console.log statements and update the web directory path.

These changes improve the packaging process of the Electron app and ensure that all necessary files are included in the built app.

Thanks to @dnnsjsk