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/msg_docs/FailureDetectorStatus.md

@@ -0,0 +1,23 @@
+# FailureDetectorStatus (UORB message)
+
+
+
+[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/FailureDetectorStatus.msg)
+
+```c
+uint64 timestamp                    # time since system start (microseconds)
+
+# FailureDetector status
+bool fd_roll
+bool fd_pitch
+bool fd_alt
+bool fd_ext
+bool fd_arm_escs
+bool fd_battery
+bool fd_imbalanced_prop
+bool fd_motor
+
+float32 imbalanced_prop_metric      # Metric of the imbalanced propeller check (low-passed)
+uint16 motor_failure_mask           # Bit-mask with motor indices, indicating critical motor failures
+
+```