feat: use db for rag

bot/prisma/schema.prisma

@@ -0,0 +1,29 @@
+// This is your Prisma schema file,
+// learn more about it in the docs: https://pris.ly/d/prisma-schema
+
+generator client {
+    provider = "prisma-client-js"
+}
+
+datasource db {
+    provider = "mongodb"
+    url      = env("MONGO_URI")
+}
+
+model Announcements {
+    id        String   @id @default(auto()) @map("_id") @db.ObjectId
+    title     String
+    content   String
+    type      String
+    createdAt DateTime @unique @default(now())
+}
+
+model Documentation {
+    id        String @id @default(auto()) @map("_id") @db.ObjectId
+    title     String
+    pageTitle String
+    url       String
+    content   String
+    pageId    String @unique
+    file      String
+}