feat(core): intilize integration module and basic readwise impl (#10726)

close AF-2257, AF-2261, AF-2260, AF-2259

### Feat

- New `Integration` Module
- Basic Readwise integration
  - connect
  - import
  - disconnect
- Common Integration UI
- Common Integration Writer  (Transform markdown to AFFiNE Doc)

### Not Implemented

>  will be implemented in down-stack
- delete docs when disconnect
- readwise settiing UI
- integration property rendering

packages/frontend/core/src/modules/db/schema/schema.ts

@@ -6,6 +6,8 @@ import {
 } from '@toeverything/infra';
 import { nanoid } from 'nanoid';
 
+const integrationType = f.enum('readwise', 'zotero');
+
 export const AFFiNE_WORKSPACE_DB_SCHEMA = {
   folders: {
     id: f.string().primaryKey().optional().default(nanoid),
@@ -22,6 +24,7 @@ export const AFFiNE_WORKSPACE_DB_SCHEMA = {
     journal: f.string().optional(),
     pageWidth: f.string().optional(),
     isTemplate: f.boolean().optional(),
+    integrationType: integrationType.optional(),
   }),
   docCustomPropertyInfo: {
     id: f.string().primaryKey().optional().default(nanoid),
@@ -38,7 +41,6 @@ export const AFFiNE_WORKSPACE_DB_SCHEMA = {
 export type AFFiNEWorkspaceDbSchema = typeof AFFiNE_WORKSPACE_DB_SCHEMA;
 
 export type DocProperties = ORMEntity<AFFiNEWorkspaceDbSchema['docProperties']>;
-
 export type DocCustomPropertyInfo = ORMEntity<
   AFFiNEWorkspaceDbSchema['docCustomPropertyInfo']
 >;
@@ -52,6 +54,20 @@ export const AFFiNE_WORKSPACE_USERDATA_DB_SCHEMA = {
     key: f.string().primaryKey(),
     value: f.json(),
   },
+  docIntegrationRef: {
+    // docId as primary key
+    id: f.string().primaryKey(),
+    type: integrationType,
+    /**
+     * Identify **affine user** and **integration type** and **integration account**
+     * Used to quickly find user's all integrations
+     */
+    integrationId: f.string(),
+    refMeta: f.json(),
+  },
 } as const satisfies DBSchemaBuilder;
 export type AFFiNEWorkspaceUserdataDbSchema =
   typeof AFFiNE_WORKSPACE_USERDATA_DB_SCHEMA;
+export type DocIntegrationRef = ORMEntity<
+  AFFiNEWorkspaceUserdataDbSchema['docIntegrationRef']
+>;