Support Kotlin inline classes for ids

Inline classes are a good way to add compile time type safety to database queries. They would prevent error caused by querying a box with the wrong id type.

@Entity
data class EntityA(
    val str: String,
    val id: EntityAId
)

inline class EntityAId(val value: Long)

@Entity
data class EntityB(
    val str: String,
    val id: EntityBId
)

inline class EntityBId(val value: Long)

val unsafeId: Long = getSomeId() //returns an id meant for EntityA
boxStore.boxFor<EntityB>()[unsafeId] //Runtime error

val safeId: EntityAId = getSomeId()
boxStore.boxFor<EntityB>()[safeId] //Compile time error

And the unsafe call only crashes if you're lucky, other times it might just seem like the database is returning garbage data, since you queried it with the wrong ids.

Start from the Kotlin examples using inline classes such as EntityAId and EntityBId, and trace the boxStore.boxFor()[id] call. Done means supported inline-class ids preserve compile-time separation between entity id types and reject an id of the wrong type during compilation.