Allowing users of the library to tweak the reqwest client's timeout

[bylerbk]

Changes Made

1. Added reqwest_timeout:
   • Introduced a new field reqwest_timeout in the WebDriverConfig struct to specify the timeout duration for the reqwest client.
   • Updated the WebDriverConfigBuilder to include methods for setting the reqwest_timeout.
   • Ensured that the default timeout is set to 120 seconds if not specified by the user.
2. Updated web_driver.rs:
   • Modified the new_with_config function to use the reqwest_timeout from the WebDriverConfig when creating the reqwest client

This change enhances the flexibility of the WebDriver by allowing users to configure the timeout for the reqwest client, making the library more adaptable to different use cases.

closes #244

[Vrtgs]

LGTM

[Vrtgs]

Can you fix ci (run cargo fmt)?

[Vrtgs]

CI is failing(?)

btw sorry for being late I had midterms coming up and had to cram