feat(robots): add earth rover robot support (#2575)

Co-authored-by: somthecoder <sbaner64@gmail.com>
Co-authored-by: randomSmarts <Aarshsmittal@gmail.com>
Co-authored-by: Hassoonu <halsae2@illinois.edu>
Co-authored-by: Saketh06 <saketh.kantipudi@gmail.com>
Co-authored-by: sairajshetye <sairajshetye2@gmail.com>
Co-authored-by: Khalil Meftah <kmeftah.khalil@gmail.com>

docs/source/_toctree.yml

@@ -85,6 +85,8 @@
     title: Reachy 2
   - local: unitree_g1
     title: Unitree G1
+  - local: earthrover_mini_plus
+    title: Earth Rover Mini
   title: "Robots"
 - sections:
   - local: phone_teleop