Introduce NapCat Protocol and adapter management

Added the new napcat-protocol package with protocol config, event, API, and network management modules. Introduced napcat-adapter package to unify protocol adapter management, replacing direct OneBot usage in framework and shell. Updated napcat-framework and napcat-shell to use NapCatAdapterManager for protocol initialization and registration. Adjusted dependencies and Vite configs to include new packages.

packages/napcat-protocol/api/index.ts

@@ -0,0 +1,49 @@
+import { NapCatCore } from 'napcat-core';
+import { NapCatProtocolAdapter } from '@/napcat-protocol/index';
+
+// NapCat Protocol API 基类
+export abstract class NapCatProtocolApiBase {
+  protected adapter: NapCatProtocolAdapter;
+  protected core: NapCatCore;
+
+  constructor (adapter: NapCatProtocolAdapter, core: NapCatCore) {
+    this.adapter = adapter;
+    this.core = core;
+  }
+}
+
+// 消息 API
+export class NapCatProtocolMsgApi extends NapCatProtocolApiBase {
+  constructor (adapter: NapCatProtocolAdapter, core: NapCatCore) {
+    super(adapter, core);
+  }
+
+  // 消息相关 API 方法可以在这里实现
+}
+
+// 用户 API
+export class NapCatProtocolUserApi extends NapCatProtocolApiBase {
+  constructor (adapter: NapCatProtocolAdapter, core: NapCatCore) {
+    super(adapter, core);
+  }
+
+  // 用户相关 API 方法可以在这里实现
+}
+
+// 群组 API
+export class NapCatProtocolGroupApi extends NapCatProtocolApiBase {
+  constructor (adapter: NapCatProtocolAdapter, core: NapCatCore) {
+    super(adapter, core);
+  }
+
+  // 群组相关 API 方法可以在这里实现
+}
+
+// 好友 API
+export class NapCatProtocolFriendApi extends NapCatProtocolApiBase {
+  constructor (adapter: NapCatProtocolAdapter, core: NapCatCore) {
+    super(adapter, core);
+  }
+
+  // 好友相关 API 方法可以在这里实现
+}