added projects directory, and gitignored it

.gitignore

@@ -96,4 +96,6 @@ spot/ros_ws/src/rbd_spot_perception/maps/bosdyn/**/*.zip
 *.bag
 
 ## Ignore yolov5 weights
-spot/ros_ws/src/rbd_spot_perception/models/yolov5
+spot/ros_ws/src/rbd_spot_perception/models/yolov5
+
+projects/

projects/README.md

@@ -0,0 +1,9 @@
+This directory contains files for custom projects.  The
+entire content of the directory is ignored by git. You can
+use this directory to place whatever you like and have that
+mirrored and accessible within the docker container's
+robotdev directory.
+
+For example, you can put the repositories for your projects here.
+Those repositories _won't_ and _shouldn't_ become submodules of robotdev
+because only _you_ (or your teammates) need them.