feat: add models package

packages/models/src/Domain/Syncable/ItemsKey/ItemsKeyInterface.ts

@@ -0,0 +1,19 @@
+import { ProtocolVersion } from '@standardnotes/common'
+import { DecryptedItemInterface } from './../../Abstract/Item/Interfaces/DecryptedItem'
+import { ItemContent, SpecializedContent } from '../../Abstract/Content/ItemContent'
+
+export interface ItemsKeyContentSpecialized extends SpecializedContent {
+  version: ProtocolVersion
+  isDefault?: boolean | undefined
+  itemsKey: string
+  dataAuthenticationKey?: string
+}
+
+export type ItemsKeyContent = ItemsKeyContentSpecialized & ItemContent
+
+export interface ItemsKeyInterface extends DecryptedItemInterface<ItemsKeyContent> {
+  get keyVersion(): ProtocolVersion
+  get isDefault(): boolean | undefined
+  get itemsKey(): string
+  get dataAuthenticationKey(): string | undefined
+}