[ESv2] Refactor all components to match component context

[HarisSpahijaPon]

Refactor all components to match component context

Summary description

I noticed that when implementing i18next a lot of components do not have a reference in component context. For example CheckoutActions and CheckoutTopHat are not defined in the component context.

Rationale for why this feature is necessary

All items that can/should be inherited from the component context should be moved to there. It makes an easier development experience and a better overview of all the components.
Also the documentation about creating custom components and using component context should be updated prior to 3.0 release.

Expected use cases

Custom component implementation, overriding or passing props to components.

[aldeed]

Agree with this. May not get into 3.0 release but soon after.