[Feature] Add CLI arguments for autostarting the proxy on launch

[Lerohi]

It would be really useful to be able to automate the starting of the proxy with command line arguments.

Example usage:
On Windows, open cmd in SWEX working directory and type SWEX.exe --start_proxy_steam or SWEX.exe --start_proxy_remote

Expected behaviour:
SWEX should launch normally and try to start the proxy in steam/remote mode automatically without the user having to interact with the respective UI each time.

This would allow to fully automate the process of starting SWEX when SW is launched via Steam. This setup would include a custom bat script using this functionality (see above commands), which gets called via Steams Game Launch Options through the %COMMAND% flag. This would look like this: custombat.bat %COMMAND%

[Xzandro]

This should be possible already.

sw-exporter/app/proxy/SWProxy.js

Line 180 in f848769

if (process.env.autostart) {

Probably have to adjust the starting script to set that to true.