feat: refactor copilot module (#14537)

packages/backend/native/index.d.ts

@@ -1,5 +1,9 @@
 /* auto-generated by NAPI-RS */
 /* eslint-disable */
+export declare class LlmStreamHandle {
+  abort(): void
+}
+
 export declare class Tokenizer {
   count(content: string, allowedSpecial?: Array<string> | undefined | null): number
 }
@@ -46,6 +50,10 @@ export declare function getMime(input: Uint8Array): string
 
 export declare function htmlSanitize(input: string): string
 
+export declare function llmDispatch(protocol: string, backendConfigJson: string, requestJson: string): string
+
+export declare function llmDispatchStream(protocol: string, backendConfigJson: string, requestJson: string, callback: ((err: Error | null, arg: string) => void)): LlmStreamHandle
+
 /**
  * Merge updates in form like `Y.applyUpdate(doc, update)` way and return the
  * result binary.