controller

It would be good to add proper building instructions for Windows (installing packages/libs etc.) in BUILDING.md.
Preferably using msys2. It is already used with CI. It works good and allows installing multiple tools and libraries for windows.

These two documents seem to play the same role. And the contribute.md doesn't mentioned the development.md, but it is the default contributing guide linked in project README.

Goals:

1. Move "How to contribute" and "How to report a bug" to README.
2. Merge "How to add a new feature or change an existing one" with development.md
3. Rename development.md to contribute.md

Discussion is welcom

It would be good to add a mention about healthEndpoint to documentation as it is super useful when using urlFrom.ingressRef

At least I could not easily find the complete list of supported values. Luckily found a mention in https://github.com/stakater/IngressMonitorController/blob/master/docs/migration-guide.md

It is not the first doc to read as I started using the operator from the start.