Detect when csharpier was updated, or provide method to update the running version

[belav]

All the IDE extensions keep csharpier running, but they do not detect when csharpier was updated in the solution or globally.

There are a few options

1. Detect when csharpier was updated automatically - using file watchers in the tool manifest. But what about globally?
2. Provide an action so the user can restart csharpier.
3. On a regular basis, redetect which version should be used for a file.