Update Jetson setup and driver stack docs for beginner-friendliness

[MLN-MNJ]

Summary

Reworked the Configure Jetson and Peripherals and Install RoboRacer Driver Stack sections to be clearer and easier for beginners to follow.

Changes

• Merged "Configuring the NVIDIA Jetson NX" and "Connecting the Pit/Host and the NVIDIA Jetson NX" into one page; flashing now points to the NVIDIA SDK Manager and WiFi is configured via the GUI.
• VESC firmware: updated the firmware step for the current VESC Tool (use Download Latest; the old "Show non-default firmwares / VESC_servoout.bin" flow no longer works).
• Driver stack: rewritten for ROS 2 Humble (ros-humble-ros-base, rosdep, humble-devel, colcon), with clearer udev rules (+ a nano tip) and an asio_cmake_module build note.
• LiDAR: added SICK ethernet LiDAR setup (with screenshots); folded the Hokuyo 10LX ethernet config into the driver stack page and removed the standalone Hokuyo page.
• Reordered the firmware section and renumbered pages accordingly.
• Fixes: typos, a broken command (run_container.sh), and uncommented figure captions so screenshots are labeled and the docs build cleanly.

Builds cleanly with Sphinx (no new warnings on the edited pages).

[AhmadAmine998]

I updated this PR to also resolve several long-standing issues, incorporate two other open PRs, and add docs CI so it can serve as the main docs release.

What's added

• Update servo control vesc instructions #75 — add the Write App Configuration step so servo output persists to the VESC
• Joining the robo-racer slack for questions #78 — point all community links (10 pages) to a working RoboRacer Slack invite
• NX Notes #53 — document the Logitech F710 D/X mode + joypad udev product id (c219/c21f)
• Devices change option #57 — note SICK TiM and USB LiDAR variants in the FAQ
• set conf.py github_version from the RTD build env (correct "Edit on GitHub" links)
• add docs CI — .github/workflows/docs.yml running strict sphinx-build -W
• incorporate Update drive_manual.rst #79 (drive_manual.rst setup improvements, authored by @AdeebTarzi)
• fix ~43 pre-existing Sphinx warnings so the strict -W build is clean

Closes / supersedes

Closes #48
Closes #53
Closes #57
Closes #75
Closes #78

Supersedes #79 (incorporated here, authorship preserved) and #69 (the run_container.sh typo is already fixed in this branch).

CI / build

sphinx-build -W --keep-going -b html passes with 0 warnings. The new build-docs GitHub Action runs this on every PR.

Notes

Part of a docs rework toward a versioned structure (main = latest/Humble, foxy frozen, ros1 legacy). A follow-up PR will handle deprecated-content removal (TX2 / old ROS 1 sim), replace the in-repo simulator guide with a pointer to f1tenth_gym, rewrite the README, and add inline .. todo:: flags for the hardware refresh (Xavier NX → Orin, new top-plate schematic).