🚀 windows build script + nsis web installer

bump version v0.5.7

update electron-builder to v13.0.0

Use stable module version

Using stable version of node modules. 
Using '*' or 'latest' in node modules version could cause unexpected results and could break your code.

🆙 Linux app version

📦 v0.5.2-Beta

App icons + linux app arch changes

😆 fixed - spellchecker path on build:osx