Simplify Visual Studio Code extension webview communication

In Visual Studio Code extension webviews you probably need to get familiar with post-messaging communication. This post-messaging communication is used when you want to start a process, request information, etc. For this communication flow to work, the extension and webview can send and listen to incoming messages. Although this is not a complicated flow to understand, it quickly feels like a disconnected communication flow, as you cannot simply wait for a response.