Feature | Add FlowForms to example app.

Added FlowForms to the login form
Updated the login form to cover more cases, providing meaningful error messages for each case.
Added DI in the example app, it wasn't being used.
Added all the Koin dependencies to the build.gradle to avoid any confusion in the future. I lost a bit of time when trying to use koinViewModel and it was because the specific compose dependency wasn't included.
Changed ErrorHandler to an abstract class so we can use it as a coroutine scope.

I Replaced PatternsUtil by an empty SomeDataClass file instead of removing it to keep the folder structure in repo (we need to have at least 1 file).

rootstrap / android-base-compose