An minimal authenticating HTTP(S) forward proxy based on https://github.com/adamfisk/LittleProxy. You can easily add sniffing / rewriting if needed. In short: Fiddler in Java
Yes, you should have a look at the install script before executing it ;-)
iex (iwr "https://raw.githubusercontent.com/baloise/proxy/SWT/install/win64.ps1").content
You can look up the current proxy version @ https://jitpack.io/com/github/baloise/proxy/proxy/-SNAPSHOT/maven-metadata.xml
Start-Process "$env:USERPROFILE\.proxy\proxy.bat" -WindowStyle Hidden