Update database configuration to use biveki database with prism_ table prefix

backend/src/modules/conversations/entities/conversation.entity.ts

@@ -4,7 +4,7 @@ import { User } from '../../users/entities/user.entity';
 import { Message } from '../../messages/entities/message.entity';
 
 @ObjectType()
-@Entity('conversations')
+@Entity('prism_conversations')
 export class Conversation {
   @Field(() => ID)
   @PrimaryGeneratedColumn('uuid')
@@ -21,7 +21,7 @@ export class Conversation {
   @Field(() => [User])
   @ManyToMany(() => User)
   @JoinTable({
-    name: 'conversation_participants',
+    name: 'prism_conversation_participants',
     joinColumn: { name: 'conversationId', referencedColumnName: 'id' },
     inverseJoinColumn: { name: 'userId', referencedColumnName: 'id' },
   })