Add generic for store state type

[SanterreJo]

What:

Fixes #265
As suggested by @robertgr991
Use type inference benefits when using a function like rehydrated

Why:

When implementing a function like rehydrated the store argument is currently typed as any.

How:

By adding a generic type when calling the createPersistedState function

const persisted = createPersistedState<RootState>();

Checklist:

• Documentation N/A
• Tests N/A
• Ready to be merged
• Added myself to contributors table

[robinvdvleuten]

@SanterreJo thanks for the effort!

[robinvdvleuten]

@all-contributors please add @SanterreJo for code

[allcontributors]

@robinvdvleuten

I've put up a pull request to add @SanterreJo! 🎉