Add expo-sqlite/kv-store persist plugin

[catalinmiron]

Add expo-sqlite/kv-store to the persist plugins list.

More about the expo-sqlite/kv-store

Initial PR: #413

Usage:

• default database

import { Storage } from 'expo-sqlite/kv-store';

export const persistOptions = configureSynced({
  persist: {
    plugin: observablePersistSqlite(Storage),
  },
});

• custom database file

import { SQLiteStorage } from 'expo-sqlite/kv-store';

export const persistOptions = configureSynced({
  persist: {
    plugin: observablePersistSqlite(new SQLiteStorage("myOtherSQLiteDatabase")),
  },
});

[byCedric]

This might require either one of these things too:

1. Add an optional peer dependency constraint to expo-sqlite: >=15.0.0.
2. Remove the default Storage value, and make it explicit.

If you want to access expo-sqlite within a library, there has to be some sort of dependency reference towards it. Otherwise, isolated modules would break it by not symlinking the modules together. But, you can also work around it by letting users pass the reference on both cases, because expo-sqlite should be installed by the user when the user uses it.

E.g.

import { Storage } from 'expo-sqlite/kv-store';

export const persistOptions = configureSynced({
  persist: {
    plugin: observablePersistSqlite(Storage),
  },
});

[catalinmiron]

@byCedric you are right, as the docs mentioned for AsyncStorage, there's an initial step to install the dependency but it is not saying anything about the versioning (which we should enforce)

1. I agree, since kv-store it's available from >=15.x
2. Great point, I will make the Storage explicit and make it required. @jmeistrich maybe when we add the docs, we should add the option with the custom database name as well, because Storage = new SQLiteStorage('ExpoSQLiteStorage')

I am going to fix this tomorrow. Thanks @byCedric for the suggestions, really valid points 👍

[catalinmiron]

@jmeistrich ready for review

[jmeistrich]

Thank you @catalinmiron! And thanks @byCedric for the help ❤️

Merged and released in beta.24