Migrate redux to NgRx

[shaman-apprentice]

Maintenance

As a developer I don't want to mix different libraries and best practices, so that I can easily read existing code and need only one mindset for writing new code.

In ADR 8 angular migration we decided to use rxjs observerables and migrate to @ngrx/store.

While migrating from AngularJS to Angular we already introduced an ngrx/store like wrapper around redux here. For completing this transition we want to replace redux and this wrapper through a real ngrx/store.

Expected advantages

• We can remove our custom minimal redux to NgRx wrapper. Instead we will have full NgRx API available
• We can use NgRx testing utilities. This enables us for a cleaner mocking of selectors. We can likely reduce how often we initialise the complete store by a lot.
• NgRx has better typings
• NgRx boilder code is less verbose than redux's

Acceptance criteria

• redux is replaced from package.json

Development notes (optional Task Breakdown)

• Replace redux store through ngrx/store. This includes rewriting all actions and reducers.
• Replace custom selectors through real selectors.
• Replace custom effects through real effects.
• Adjust tests