[FSSDK-9621] add persistentCacheProvider option for instantiation

[raju-opti]

Summary

• make the react native persistent cache implementation configurable

Test plan

• added relevant tests

Issues

• FSSDK-9621

[coveralls]

coverage: 90.374%. remained the same
when pulling 4b4bc68 on raju/configurable-cache
into 7283019 on master.

[mikechu-optimizely]

@anton-patrushev Was this what you had in mind for your posted issue?

[mikechu-optimizely]

LGTM.

I think it's worthwhile to spin up an Expo project and include this branch's dist for manual testing and pass in our own store.

[muzahidul-opti]

Do we need to support both? If mmkv meets our requirements, perhaps we can gradually discontinue async-storage.

[raju-opti]

Do we need to support both? If mmkv meets our requirements, perhaps we can gradually discontinue async-storage.

@muzahidul-opti this PR allows the user to provide their own peristentCache, so that they can use anything they like. By default we are still using async-storage.

[mikechu-optimizely]

Do we need to support both? If mmkv meets our requirements, perhaps we can gradually discontinue async-storage.

Good qustion @muzahidul-opti . Thanks for asking it.