demos: Thumper demo (#266)

* demos: thumper_demo: adding git submodule

* demos: thjmper_demo: adding index file

* thumper_demo: fix gitmodules

* adding thumper to the yaml file

* Fix CI

* Update _docs/tutorials/demos/thumper_demo/index.md

Co-authored-by: Jose Antonio Moral <joseantoniomoralparras@gmail.com>

Co-authored-by: Pablo Garrido <pablogs9@gmail.com>
Co-authored-by: Jose Antonio Moral <joseantoniomoralparras@gmail.com>

Author: 3 people

.gitmodules

@@ -12,3 +12,7 @@
 [submodule "_includes/demobox_demo"]
 	path = _includes/demobox_demo
 	url = https://github.com/micro-ROS/micro-ROS_demobox_demo.git
+[submodule "_includes/thumper_demo"]
+	path = _includes/thumper_demo
+	url = https://github.com/micro-ROS/micro-ROS_thumper_demo
+	branch = foxy

_data/docs.yml

@@ -71,6 +71,7 @@
    - tutorials/demos/openmanipulator_demo
    - tutorials/demos/fiware_demo
    - tutorials/demos/demobox_demo
+   - tutorials/demos/thumper_demo
    - tutorials/demos/combined_demos
 
 - title: Nuttx-specific Tutorials

_docs/tutorials/demos/thumper_demo/index.md

@@ -0,0 +1,10 @@
+---
+title: Thumper, a six-wheeled robot
+layout: docs_noheader
+permalink: /docs/tutorials/demos/thumper_demo/
+redirect_from:
+  - /thumper_demo/
+---
+
+{% capture my_include %}{% include thumper_demo/README.md %}{% endcapture %}
+{{ my_include | markdownify }}