📝 Update README with Tencent STS usage

- Added code snippets for using Tencent STS
- Updated README and README_ZH files

.changeset/ninety-ducks-develop.md

@@ -0,0 +1,5 @@
+---
+"@cardbrother/nestjs-tencent-cloud-sdk": patch
+---
+
+update readme

README.md

@@ -158,6 +158,34 @@ cosClient.upload({
 });
 ```
 
+#### **Usage Tencent STS**
+
+```ts
+ const sts_client = await tencentCloudService.useClient(
+      TencentCloudClientType.STS,
+    );
+    expect(sts_client).toBeDefined();
+    expect(sts_client).toBeInstanceOf(StsProvider);
+    const tempSignature = await sts_client.createTemporary({
+      Name: 'Test',
+      Policy: encodeURI(
+        JSON.stringify({
+          version: '2.0',
+          statement: [
+            {
+              effect: 'allow',
+              action: ['name/cos:PutObject'],
+              resource: ['*'],
+            },
+          ],
+        }),
+      ),
+      DurationSeconds: 1800,
+    });
+
+
+
 #### 📝 [CHANGELOG](CHANGELOG.md)
 
 #### License [MIT](https://github.com/guotingchao/nest-tencent-cloud-sdk/blob/main/LICENSE)
+```

README_ZH.md

@@ -158,6 +158,34 @@ cosClient.upload({
 });
 ```
 
+#### **使用 Tencent STS**
+
+```ts
+ const sts_client = await tencentCloudService.useClient(
+      TencentCloudClientType.STS,
+    );
+    expect(sts_client).toBeDefined();
+    expect(sts_client).toBeInstanceOf(StsProvider);
+    const tempSignature = await sts_client.createTemporary({
+      Name: 'Test',
+      Policy: encodeURI(
+        JSON.stringify({
+          version: '2.0',
+          statement: [
+            {
+              effect: 'allow',
+              action: ['name/cos:PutObject'],
+              resource: ['*'],
+            },
+          ],
+        }),
+      ),
+      DurationSeconds: 1800,
+    });
+
+
+
 #### 📝 [CHANGELOG](CHANGELOG.md)
 
 #### License [MIT](https://github.com/guotingchao/nest-tencent-cloud-sdk/blob/main/LICENSE)
+```