API endpoint page for docs (Bitcoin/Leather playground)

[mica000]

As part of the developer docs initiative we would like to build the following page (Link):

Besides the navbar and the menu, which will be build in the homepage task, the endpoint page has three elements:

• Content (To allow for markdown content to be added + area for adding Json, which should work for dark and light modes)
• Playground area
• Results area (link)

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To be researched with devs
☐ Define how we would like to build it: In house or using an existing tool like https://docusaurus.io/

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Video recording of prototype:
https://github.com/leather-wallet/extension/assets/119523541/707c8862-6197-4937-8caf-c03ef06d90d5