In process networking for WebEngine to make firewall rules simpler

Whitelisting an application that uses WebEngine now needs to whitelist the QtWebEngineProcess (in addition to the actual app if it also uses network), but because of this generic name, the settings get messy if there are multiple Qt applications. Additionally if multiple binaries use the same and only one should be whitelisted, it is not possible.

It is possible to rebuild Qt and rename the executable to make it unique at least, but it takes time.

Perhaps network code could be moved in-process to make this simpler.