[🚀 Feature]: Expose HTTP/WebSocket client configuration

In Java and Python, there is a `ClientConfig` class that is responsible for configuring client-specific options that are not applicable to the remote, such as HTTP connection timeouts. Now that we want to add WebSocket timeout options, it makes sense to unify this across the bindings and provide a similar API to set these timeouts and allow passing them to the WebDriver constructor.

This is also responsible for managing proxy configuration.

Reference:
- https://github.com/SeleniumHQ/selenium/blob/2280161d4fc70da9294f496e15d990f643721311/java/src/org/openqa/selenium/remote/http/ClientConfig.java
- https://github.com/SeleniumHQ/selenium/blob/b3fc1b348e16e4d8afc090bc44f5fff18ed5114a/py/selenium/webdriver/remote/client_config.py

Related to #16053.