Refactor message API types and add elementId to file element

Removed unnecessary type casting in NTQQMsgApi, added missing elementId property to fileElement in NTQQOnlineApi, and updated NodeIKernelMsgService to use SendMessageElement for sendMsg. Also standardized method signatures and formatting for improved type safety and consistency.

packages/napcat-core/apis/msg.ts

@@ -245,7 +245,7 @@ export class NTQQMsgApi {
       [
         '0',
         peer,
-        msgElements as any,
+        msgElements,
         new Map(),
       ],
       (ret) => ret.result === 0,

packages/napcat-core/apis/online.ts

@@ -31,6 +31,7 @@ export class NTQQOnlineApi {
 
     const fileElementToSend = [{
       elementType: 23,
+      elementId: '',
       fileElement: {
         fileName: actualFileName,
         filePath,