Update dac documentation

[TucksonDev]

This PR updates the documentation available to configure a DAC.

Important notes:

• Multiple partial views were created for this work. There's currently a limitation with Docusaurus that doesn't show headings of imported MD documents in the TOC of the right sidebar. Because the two main guides share a fair amount of content, and to avoid duplication as much as possible, partial views have been created for the content that is shared among both guides. This partial views don't include the headers of the sections, which are added directly to the main document to have them available in the TOC. Once that limitation is solved, we can reduce the number of partial views.
• One of the styles has been slightly adjusted to allow for tabgroups without a "label".
• Last page is not present as it is being worked on in this PR: docs for keyset generation on anytrust orbits #799 . An appropriate banner has been placed instead.
• Placement of the section can be changed. It is now placed at the end of the Node running section, but can be moved somewhere else. We can prioritize publishing the doc before finding the best place for this docs too.

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Name	Status	Preview	Updated (UTC)
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[symbolpunk]

In review

[TucksonDev]

Thanks @Tristan-Wilson !
I've added a few more changes to the guides:

• The main guide now doesn't mention the possibility of "disabling" the REST interface, but rather talks about running a mirror DAS to support your main DAS in handling REST requests.
• Simplified the mirror DAS guide since it's now aimed at members who already have a main DAS running. Added a notice on top and redirections of the introductory sections to the main guides.
• Rearranged some of the content to support those 2 changes (e.g., adding the "Archive" section to both guides.

Note: I've kept the partial views for now, until everything is good. Will remove those before merging.

[Tristan-Wilson]

LGTM

[symbolpunk]

This is a beast of a PR... lots of misc nits, no blocking feedback. TYVM 🙏

[symbolpunk]

Suggested change

	sidebar_label: Configure the DAC in your chain
	sidebar_label: Configure a Data Availability Committee (DAC)

[TucksonDev]

Modified the sidebar to "How to configure the Data Availability Committee (DAC) in your chain" since this document is specific about one step of the process and having the same title as the section might be confusing for users. I kept the suggested convention.

[symbolpunk]

Suggested change

	title: 'How to configure a Data Availability Committee: configure the DAC in your chain'
	title: 'How to configure a Data Availability Committee (DAC)'

[TucksonDev]

Modified the title too, as specified here.