Selectively persist controller states

[Cal-L]

Description

This ticket will aim to reduce the amount of data that gets persisted. However, for the UI to register controller changes, we'll still need to store necessary data in Redux. Data that is omitted from persist should be stored under some key in Redux.

Technical Details

• Idea: We could store omitted data using the same controller structure so that UI changes will be minimal when referencing this data. For example: we could store the omitted data under a key called tempBackgroundState so we'd just have to replace backgroundState in redux selectors with tempBackgroundState.
• Pull out phishing list from PhishingController
• Pull out token list from TokenListController
• TBD: Pull out data from SwapsController, will need to consult @wachunei

Acceptance Criteria

• Phishing list is still respected when accessing the browser
• Token detection should function the same as before
• Swaps should function the same as before
• TBD: Double check dependencies between persisted + non-persisted data to ensure that this selective persisting method makes sense