perf(network): 新增全局公共http请求 headers设置

1. 新增公共请求头配置项，支持在系统设置中配置全局请求头
2. 实现请求头解析工具方法，支持多行KEY=VALUE格式配置
3. 在请求发起时自动附加全局公共请求头，且不会覆盖请求中已存在的同名Header
4. 添加多语言配置与前端表单组件，完善配置界面
5. 新增单元测试验证全局请求头合并逻辑

packages/core/basic/src/utils/util.request.test.ts

@@ -0,0 +1,53 @@
+import { expect } from "chai";
+import { createAxiosService, HttpClient, setGlobalHeaders } from "./util.request.js";
+import { ILogger } from "./util.log.js";
+
+const testLogger = {
+  info() {},
+  error() {},
+} as unknown as ILogger;
+
+describe("util.request", () => {
+  afterEach(() => {
+    setGlobalHeaders({});
+  });
+
+  it("should merge global headers without overriding request headers", async () => {
+    setGlobalHeaders({
+      "X-Common": "common",
+      "X-Override": "global",
+    });
+
+    const http = createAxiosService({ logger: testLogger }) as HttpClient;
+    const res = await http.request({
+      url: "http://example.com",
+      method: "get",
+      logReq: false,
+      logRes: false,
+      headers: {
+        "X-Override": "request",
+        "X-Request": "request",
+      },
+      adapter: async config => {
+        const headers = config.headers;
+        return {
+          config,
+          data: {
+            common: headers.get("X-Common"),
+            override: headers.get("X-Override"),
+            request: headers.get("X-Request"),
+          },
+          headers: {},
+          status: 200,
+          statusText: "OK",
+        };
+      },
+    });
+
+    expect(res).to.deep.equal({
+      common: "common",
+      override: "request",
+      request: "request",
+    });
+  });
+});