docs(websocket): add pytest dependencies and execution instructions

Author: surengab

components/esp_websocket_client/examples/target/README.md

@@ -73,7 +73,31 @@ idf.py -p PORT flash monitor
 
 (To exit the serial monitor, type ``Ctrl-]``.)
 
-See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
+See the [ESP-IDF Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
+
+## Testing with pytest
+
+### Install Dependencies
+
+Before running the pytest tests, you need to install the required Python packages:
+
+```
+pip install -r esp-protocols/ci/requirements.txt
+```
+
+### Run pytest
+
+After installing the dependencies, you can run the pytest tests:
+
+Run all tests in current directory:
+```
+pytest .
+```
+
+Run specific test file:
+```
+pytest pytest_websocket.py
+```
 
 ## Example Output