Add remote.sendRequestFn to override log sending

[megahertz]

Discussed in #351

^{Originally posted by psiservices-ccounterman March 1, 2023}
I'm having problems with people running my electron app behind a proxy. I've fixed some issues by using
https://www.electronjs.org/docs/latest/api/net which "is similar to the HTTP and HTTPS modules of Node.js but uses Chromium's native networking library instead of the Node.js implementation, offering better support for web proxies."
I'm fixing more, but realized that it is affecting the logging as well.
src/transports/remote.js uses http and https.
Before I do anything difficult, is there a currently-supported way to swap in the electron net API or substitute a different remote transport?
Is there a reason electron-log shouldn't use electron.net as the norm?

[megahertz]

Will be published in 5.0.0-beta.21