feat: add @standardnotes/encryption package (#1199)

* feat: add @standardnotes/encryption package

* fix: mobile dependency on encryption package

* fix: order of build & lint in pr workflows

* fix: web dependency on encryption package

* fix: remove encryption package composite configuration

* fix: import order

packages/encryption/src/Domain/Backups/BackupFile.ts

@@ -0,0 +1,23 @@
+import { BackupFileDecryptedContextualPayload, BackupFileEncryptedContextualPayload } from '@standardnotes/models'
+import { AnyKeyParamsContent, ProtocolVersion } from '@standardnotes/common'
+
+export type BackupFile = {
+  version?: ProtocolVersion
+  keyParams?: AnyKeyParamsContent
+  auth_params?: AnyKeyParamsContent
+  items: (BackupFileDecryptedContextualPayload | BackupFileEncryptedContextualPayload)[]
+}
+
+export enum BackupFileType {
+  Encrypted = 'Encrypted',
+
+  /**
+   * Generated when an export is made from an application with no account and no passcode. The
+   * items are encrypted, but the items keys are not.
+   */
+  EncryptedWithNonEncryptedItemsKey = 'EncryptedWithNonEncryptedItemsKey',
+
+  FullyDecrypted = 'FullyDecrypted',
+
+  Corrupt = 'Corrupt',
+}