Move PX4 Guide source into /docs (#24490)

* Add vitepress tree

* Update existing workflows so they dont trigger on changes in the docs path

* Add nojekyll, package.json, LICENCE etc

* Add crowdin docs upload/download scripts

* Add docs flaw checker workflows

* Used docs prefix for docs workflows

* Crowdin obvious fixes

* ci: docs move to self hosted runner

runs on a beefy server for faster builds

Signed-off-by: Ramon Roche <mrpollo@gmail.com>

* ci: don't run build action for docs or ci changes

Signed-off-by: Ramon Roche <mrpollo@gmail.com>

* ci: update runners

Signed-off-by: Ramon Roche <mrpollo@gmail.com>

* Add docs/en

* Add docs assets and scripts

* Fix up editlinks to point to PX4 sources

* Download just the translations that are supported

* Add translation sources for zh, uk, ko

* Update latest tranlsation and uorb graphs

* update vitepress to latest

---------

Signed-off-by: Ramon Roche <mrpollo@gmail.com>
Co-authored-by: Ramon Roche <mrpollo@gmail.com>

docs/en/flight_controller/index.md

@@ -0,0 +1,31 @@
+# Flight Controller (Autopilot) Hardware
+
+Flight Controllers (FCs) are the autopilot hardware onto which PX4 firmware is uploaded.
+This section contains topics about compatible flight controller and baseboard hardware, and how it is mounted and configured.
+
+## Selecting a Flight Controller
+
+Information about how to choose a PX4-compatible flight controller and the available controllers:
+
+- [Flight Controller Selection](../getting_started/flight_controller_selection.md)
+- [Pixhawk Standard/Supported Autopilots](../flight_controller/autopilot_pixhawk_standard.md)
+- [Manufacturer-Supported Autopilots](../flight_controller/autopilot_manufacturer_supported.md)
+- [Experimental Autopilots](../flight_controller/autopilot_experimental.md)
+- [Discontinued Autopilots & Complete Vehicles](../flight_controller/autopilot_discontinued.md)
+- [Pixhawk Autopilot Bus & Carriers](../flight_controller/pixhawk_autopilot_bus.md)
+
+::: info
+There may be other [Pixhawk Series](../flight_controller/pixhawk_series.md) compatible flight controllers and variants, including those [documented here on Github](https://github.com/PX4/PX4-Autopilot/#supported-hardware).
+:::
+
+## Flight Controller Mounting and Setup
+
+Information about how to mount the flight controller, upload firmware (replacing an incompatible bootloader if needed), and configure its internal sensors and orientation:
+
+- [Flight Controller Selection](../getting_started/flight_controller_selection.md)
+- [Mounting the Flight Controller](../assembly/mount_and_orient_controller.md)
+- [Updating Firmware](../config/firmware.md)
+- [Sensor Orientation](../config/flight_controller_orientation.md)
+- [Level Horizon Calibration](../config/level_horizon_calibration.md)
+- [Advanced Controller Orientation](../advanced_config/advanced_flight_controller_orientation_leveling.md)
+- [Bootloader Update](../advanced_config/bootloader_update.md)