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.

从使用 inline classes（例如 EntityAId 和 EntityBId）的 Kotlin 示例开始，跟踪 boxStore.boxFor()[id] 调用。完成的标准是，inline-class ID 在编译时保持 entity ID 类型之间的区分，并在编译期间拒绝类型错误的 ID。