Is there a network manager similar to the network manager program which can handle proxy information (HTTP with authentication) and does not require the individual setup of programs; ie. All network requests are directed through to the proxy via the network manager, and the application requires no knowledge of the proxy - they do not even know it is there.
I'm not sure if this is even feasible or not, but it would be really useful so that I do not need to configure proxies.
system specs: Arch Linux, kernel version 4.18.4. If anything more is needed feel free to ask.