feat: add comprehensive tests and samples for host and user rights endpoints

- Added GraphQL sample queries and mutations for host and user rights endpoints in the 'docs' directory.

- Implemented unit tests for all remaining GraphQL endpoints, including hosts, devices, host groups, locations, and user permissions.

- Created dedicated integration tests for host and user rights workflows, utilizing the new sample files.

- Fixed a bug in 'HostImporter.getHostGroupHierarchyNames' to correctly process and sort nested host group hierarchies.

- Refined Zabbix API mocking in tests to improve reliability and support path-based routing.

- Verified all 38 tests across 11 suites pass successfully.

src/test/misc_resolvers.test.ts

@@ -0,0 +1,49 @@
+
+import {createResolvers} from "../api/resolvers.js";
+import {zabbixAPI} from "../datasources/zabbix-api.js";
+
+// Mocking ZabbixAPI
+jest.mock("../datasources/zabbix-api.js", () => ({
+    zabbixAPI: {
+        executeRequest: jest.fn(),
+        post: jest.fn()
+    }
+}));
+
+describe("Miscellaneous Resolvers", () => {
+    let resolvers: any;
+
+    beforeEach(() => {
+        jest.clearAllMocks();
+        resolvers = createResolvers();
+    });
+
+    test("apiVersion query", async () => {
+        const result = await resolvers.Query.apiVersion();
+        expect(typeof result).toBe("string");
+    });
+
+    test("zabbixVersion query", async () => {
+        (zabbixAPI.post as jest.Mock).mockResolvedValueOnce({ result: "7.0.0" });
+        const result = await resolvers.Query.zabbixVersion();
+        expect(zabbixAPI.post).toHaveBeenCalledWith("apiinfo.version", expect.anything());
+    });
+
+    test("login query", async () => {
+        (zabbixAPI.post as jest.Mock).mockResolvedValueOnce("mock-token");
+        const result = await resolvers.Query.login(null, { username: "admin", password: "password" });
+        expect(result).toBe("mock-token");
+        expect(zabbixAPI.post).toHaveBeenCalledWith("user.login", expect.objectContaining({
+            body: expect.objectContaining({
+                params: { username: "admin", password: "password" }
+            })
+        }));
+    });
+
+    test("logout query", async () => {
+        (zabbixAPI.post as jest.Mock).mockResolvedValueOnce(true);
+        const result = await resolvers.Query.logout(null, null, { zabbixAuthToken: "token" });
+        expect(result).toBe(true);
+        expect(zabbixAPI.post).toHaveBeenCalledWith("user.logout", expect.anything());
+    });
+});