[BUG] 🧽 Better cleanup while disposing

[jodydonetti]

Problem

In FusionCache when Dispose() is called all the plugins used by an instance are removed automatically, so that everything is kept clean at the end, like this (pseudo-code):

void Dispose()
{
  RemoveAllPlugins();
}

The same is not done for the distributed cache and the backplane.

Solution

Start also removing both the distributed cache (if any) and the backplane (if any). Something like this (again, pseudo-code):

void Dispose()
{
  RemoveAllPlugins();
  RemoveBackplane();
  RemoveDistributedCache();
}

This will "detach" distributed caches or backplanes from their respective FusionCache instances.

[jodydonetti]

Hi all, v0.22.0 has been released and this is included 🎉