Add Unit Tests to Project using XUnit targetting net10

[Static-Codes]

Since NAOT isn't used in BAMM, the XUnit tests aren't required to be NAOT compliant.

An individual unit test needs to be made for each of the following:

Commands

• add-header
• add-headers
• browser
• click
• click-at-position
• click-exp
• close-current-tab
• end-javascript
• fill-text
• fill-text-exp
• get-text
• open-new-tab
• save-as-html
• save-as-html-exp
• select-option
• select-element
• set-custom-useragent
• start-javascript
• take-screenshot
• visit
• wait-for-seconds

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Features

• feature "add-extension"
• feature "disable-pycache"
• feature "disable-ssl"
• feature "use-http-proxy"
• feature "use-https-proxy"
• feature "use-socks4-proxy"
• feature "use-socks5-proxy"