External mode as preferred method of installation

[skybber]

HotswapHelper by default comes with its own JDK image with an embedded HA. I would recommend to focus on an installation method where users use JDK from trusted sources, such as https://github.com/JetBrains/JetBrainsRuntime, and use the HotswapAgent in external mode. At least, this installation method should be mentioned in the documentation, and I would advocate for it to be listed first, as it will enhance the credibility of this otherwise excellent plugin.

[gejun123456]

yes, will do it after refactoring the code