3d swarm sim

See merge request cheraghi/swarm-sim!10

added all original scenarios and solutions (and modified them, because some functions changed) + bug fixes

Thanx to Gorden Wunderlich

Changed the color attribute name vilolett to violet because of spelling misstake. German to English.

Changed the color attribute name vilolett to violet because of spelling misstake. German to English.

methods of particle.py

The direction enum/list has been renamed to direction_list.

All the contents of str_lib of solution and scenario and the header in lib are moved to one file called swarm_sim_header.py

Some bugs has been fixed!

Conflicts:
	lib/particle.py
	solution/random_walk.py

The direction enum/list has been renamed to direction_list.

All the contents of str_lib of solution and scenario and the header in lib are moved to one file called swarm_sim_header.py

Some bugs has been fixed!

In  scenario std_lib the method add_tiles_as_hexagon got a new
attribute color for setting the color of the tiles.

!!!Almost all the the Swarm-Sim core libaries written at the HHU
has no code smells!!!!! :)))) Only vis.py has code smells and this
is not written by HHU. And multiple.py as well and some solutions.
But in total all the core libaries/interfaces of the Swarm-Sim
has no code smells. Yeapy!!!!
Changes:
The scanning for matters method has been modified and refactored.
The header became a new function called scanning.
The stl_lib for the scenarios became to methods.
One for creating particles in hexagon.
The other one for creating a hexagon border with tiles.

The random seed is moved from world.py to swarm-sim.py, because the simulator is responsible for the randomness.