Set directories to watch other than the current directory

[ranile]

trunk currently doesn't allow users to set directories to watch.

This becomes an annoyance when when serving test/example apps for libraries where the library code may not be in the same directory as the app we're serving. In such situations, we have to re-start trunk. This can be solved if we can set what directories to watch in addition to the current working directory.

[malobre]

I'm working on an app that is composed of 3 crates in a single workspace, only one of these is built by trunk but it watches all 3 folders.

Something like this would be nice:

[watch]
include = ["./path"] # Meaning: Only watch './path', an empty array would mean watch current directory
exclude = ["./path/to/folder"] # But exclude this subfolder

[malobre]

@thedodd I can have a go at this if you want.

[thedodd]

@malobre that sounds good to me! It will be a solid feature to add. Keep me posted. Happy to help in any way.

[malobre]

I've begin working on this in #94.

If I have any question I'll ping you in the PR.