feat(core): cite source documents in the AI answer (#9863)

Support issue [BS-2424](https://linear.app/affine-design/issue/BS-2424).

### What changed?
- Add relevant document prompt templates.
- Add citation rules in system prompts.
- Change message `params` type to `Record<string, any>`
- Add unit test.

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packages/frontend/core/src/components/blocksuite/block-suite-editor/ai/request.ts

@@ -17,7 +17,7 @@ export type TextToTextOptions = {
   sessionId?: string | Promise<string>;
   content?: string;
   attachments?: (string | Blob | File)[];
-  params?: Record<string, string>;
+  params?: Record<string, any>;
   timeout?: number;
   stream?: boolean;
   signal?: AbortSignal;

packages/frontend/core/src/components/blocksuite/block-suite-editor/ai/setup-provider.tsx

@@ -117,11 +117,22 @@ export function setupAIProvider(
     const sessionId =
       options.sessionId ??
       getChatSessionId(options.workspaceId, options.docId, options.attachments);
+    const { input, docs, ...rest } = options;
+    const params = docs?.length
+      ? {
+          docs: docs.map((doc, i) => ({
+            docId: doc.docId,
+            markdown: doc.markdown,
+            index: i + 1,
+          })),
+        }
+      : undefined;
     return textToText({
-      ...options,
+      ...rest,
       client,
-      content: options.input,
+      content: input,
       sessionId,
+      params,
     });
   });