Add notebook repository documentation (#169)

* Add notebook repository documentation

* Make repos alphabetical

docs/current/controller/overview.md

@@ -0,0 +1,7 @@
+!!! quote "Source code"
+
+    The source code for Controller can be found in the
+    [controller](https://github.com/UBCSailbot/controller){target=_blank} GitHub repository.
+    Its README has been copied below.
+
+--8<-- "https://raw.githubusercontent.com/UBCSailbot/controller/main/README.md"

docs/current/notebooks/overview.md

@@ -0,0 +1,7 @@
+!!! quote "Source code"
+
+    The source code for Notebooks can be found in the
+    [notebooks](https://github.com/UBCSailbot/notebooks){target=_blank} GitHub repository.
+    Its README has been copied below.
+
+--8<-- "https://raw.githubusercontent.com/UBCSailbot/notebooks/main/README.md"

mkdocs.yml

@@ -135,12 +135,16 @@ nav:
       - Launch Files: current/sailbot_workspace/launch_files.md
     - Boat Simulator:
       - Overview: current/boat_simulator/overview.md
+    - Controller:
+      - Overview: current/controller/overview.md
     - Custom Interfaces:
       - Overview: current/custom_interfaces/overview.md
     - Local Pathfinding:
       - Overview: current/local_pathfinding/overview.md
     - Network Systems:
       - Overview: current/network_systems/overview.md
+    - Notebooks:
+      - Overview: current/notebooks/overview.md
     - Website:
       - Overview: current/website/overview.md
   - Reference: