Add the useOnListenableChange hook

[gruvw]

Fixes #389

[rrousselGit]

Could you add tests for this?

[gruvw]

tell me if the class syntax is correct, I am not sure.

After reviewing the existing test cases briefly, it is evident that I lack the necessary skills to create these tests. Therefore, I am handing over the responsibility of writing tests for this hook to someone who is willing and capable.

[rrousselGit]

I'm sure you'd be able to write those tests :)

You could copy-paste the useOnStreamChange as a very good starting point. It's pretty much the same thing we want here

[gruvw]

Ok, thank you for the comments, I did the necessary updates. Tell me if the code is good now or if there are other issues.

I might tackle the testing if you think it is within my reach, but certainly not this week.
However, there are a lot of different things I am not familiar with in test/use_on_stream_change_test.dart.

[rrousselGit]

Don't worry too much. Try what you can and I can guide you.
View this as a learning opportunity :)