Adding @Harsha509 as a site & docs committer.

[diemol]

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@harsha509 has been contributing massively to the Selenium official site and docs, and he has also manifested interest to be part of the committers team.

Description

Adding @harsha509 to the structure page where all the committers are shown, thank you @harsha509

Motivation and Context

To recognize someone who is doing a lot for the Selenium project and the community.

Types of changes

• Change to the site (I am attaching a screenshot showing the before and after)
• Code example added (and I also added the example to all translated languages)
• Improved translation
• Added new translation (and I also added a notice to each document missing translation)

Checklist

• I have read the contributing document.
• I have used hugo to render the site/docs locally and I am sure it works.

Before:

After:

[shs96c]

Heartily endorsed.