Add toggle mood rating to settings

[rwilliams659]

Feature Categories:

• React

Describe the feature/Bug your gonna work on

• Add a setting to let users enable/disable mood ratings
• Update settings context accordingly, with true as default value
• Update api calls related to settings accordingly with this additional property
• Then add conditional rendering for when timer runs out & for when video runs out/is skipped to either render mood rating or the following screen if mood is disabled
• Update/add tests accordingly

Additional context
BE will need to also update settings object to contain mood_rating: true/false so we can both get & update that value along with the other settings