[Proposal] Refactoring the Autoware Documentation Page Structure

[ismetatabay]

Motivation

After the following PRs are merged, the integration documentation addressed in the "how-to guide" tabs will become complex and challenging to follow.

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• docs: update creating autoware repositories page autoware-documentation#446
• docs: update creating vehicle and sensor model pages autoware-documentation#460
• docs: update sensor calibration documentation autoware-documentation#448
• docs: update vehicle interface with some samples autoware-documentation#453
• docs: update LIO-SAM and vector map documentation autoware-documentation#465
• docs: update launch autoware documentation autoware-documentation#466
• docs: add AWSIM integration page autoware-documentation#487

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Proposed Architecture

Therefore, we propose moving integration pages into another tab, following the structure as shown below:

To do that:

• I will move the mentioned titles to the new Integration tab.
• I will separate the open-source SLAMs and our recently added mapping documentation. We'll incorporate the LIO-SAM into the integration tab, while the other open-source SLAM algorithms will remain in the How-to Guide tab, with references to these algorithms included in the Integration tab.

I've created a draft PR for this refactoring proposal. Therefore, you can check out the documentation with this new proposed design. Please refer to the link.

Please feel free to share any suggestions regarding this proposal.

cc: @xmfcx, @mitsudome-r, @MertClk