Docs/url tab state

[Hugos68]

Linked Issue

Closes #2303

Description

• Added reactive block that syncs the currently selected doc tab in the url using a ?tab= query param.
• Added a default tab constant, whenever the currently selected tab is the default tab instead of updating the tab query param the tab query param is removed.

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Name	Status	Preview	Updated (UTC)
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[endigo9740]

@Hugos68 I implement a minor refactor and added a compliment to make it clear what this is handling. Great job, this will prove super useful for support going forward!