Refactor FeatureFactory public API using Params.

[Laimiux]

What

I'm wrapping the dependencies and key into a Params object and updating FeatureFactory.initialize to get it via the extension function receiver type Params.initialize(): Feature.

Feature factory initialization changes from

override fun initialize(dependencies: Unit, key: Key): Feature

to

override fun Params.initialize(): Feature

Why

We need to pass FragmentId or something equivalent to the FeatureFactory. This change requires us to introduce a new parameter that would break existing usages. Instead of just adding a new parameter, I'm refactoring the way this public API works which will enable us to modify Params object in the future without breaking the usages.

[carrotkite]

JaCoCo Code Coverage 97.15% :white_check_mark:

Class	Covered	Meta	Status
com/instacart/formula/android/FeatureFactory	100%	0%	:white_check_mark:
com/instacart/formula/android/internal/MappedFeatureFactory	100%	0%	:white_check_mark:

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