Reduce size of webots package

[BenjaminDeleze]

Here is the list of some heavy folders/protos/dependencies that are distributed with Webots. It may be a good idea to externalize some of them.

Name	Size
SUMO	126 MB
Protos	102 MB
e-puck/transfer+plugin	34 MB
Aseba	32 MB
The fonts	16 MB
controllers/hoap2	13.7 MB
icons	12 MB
default/controllers/ros	10 MB
sponza.wbt	9.4 MB
Pico	6.5 MB
mavic/models	5.2 MB
translations	4.8 MB
.forest	4.0 MB
controllers/c3d_viewer	2.2 MB
controllers/ros_automobile	2.1 MB