[Feature Request] Add Use hooks for Plugins

[bytemain]

as we discussed in version-fox/version-fox-plugins#14

if we want to use vfox use nodejs@20, we want the plugin provide the local installed version that match 20.

for example:

function PLUGIN:PreUse(ctx) 
  local query = ctx.query
  local installed = ctx.installed
end

[aooohan]

This hook is also needed to solve the following issue:

• Suggestion support for specific version manager files #47
• Support Tomcat Plugin #48

[bytemain]

Can you assign this to me? I can implement all the basic function and we can discuss what should be pass to the PreUse hooks and what it should return

[aooohan]

Can you assign this to me? I can implement all the basic function and we can discuss what should be pass to the PreUse hooks and what it should return

Yes, why not. But it's not just a matter of implementing a PreUse hook, I have to think about the relationship between vfox use and vfox env.
vfox use just writes version info to .tool-versions, vfox env is where it really takes effect.

[bytemain]

looks very good if PreUse return a valid version, we can keep the EnvKeys fucntion now