Add CAN Protocol Guide to Interfacing Wiki

[farnazalamahmed99-cmu]

Added a new wiki article on Controller Area Network (CAN) covering:

• Overview and key concepts
• Hardware and software setup (SocketCAN)
• Usage in robotics systems
• Common issues and debugging

This article is intended to provide a practical introduction to CAN communication in robotics.

[nevalsar]

Thanks for the contribution. Before this can be merged, please rebase this branch onto the latest master so the new PR validation workflow (recently added on master) runs on this PR.

I also found two required fixes:

1. Fix page filename/format

   • The new file is currently wiki/interfacing/CAN (no .md extension, non-kebab-case).
   • Please rename it to a markdown page in repo style, for example wiki/interfacing/controller-area-network-can.md, then update any internal references accordingly.

2. Discoverability integration

   • Add the new page to _data/navigation.yml under the Interfacing section.
   • Add the new page to wiki/interfacing/index.md with a short summary.

Optional but recommended:

• Add a short “when to use this guide” paragraph near the top and trim/condense the references section to keep long-term maintenance manageable.

After rebasing and the above fixes, I can re-review quickly.

[p-amyjiang]

In addition to the above requested fixes,

• Merge CAN Physical Layer and Hardware Requirements, and Example Use in a Robotics System and Usage in Robotics Systems - the content in these pairs of sections is somewhat redundant and repetitive.

[farnazalamahmed99-cmu]

I have renamed the file, updated the navigation, and merged the redundant sections as requested. Ready for a re-review

[farnazalamahmed99-cmu]

I have made the required changes. Kindly check, Apologies for the delay

…

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