Add simple agents and resources

* Agents move random distance
* No intelligence
* WIP
added naive collision detection. detects collision from center for now. some vibration when stuff is initialised on top of each other and radius is sufficiently large.
Clean up Element.java
Clean up LargeObject.java
Clean up MainRobotSimulation.java
wip
Clean up MaryBot.java
wip
Merge branch 'master' of github.com:JayH5/hons-simulator

Conflicts:
	src/main/java/za/redbridge/simulator/MaryBot.java
demo stuff. sigh. clowns.
added code, standardised indent
Revert "added code, standardised indent"

This reverts commit 7cf5dd11b724d0b3d160cc8cb12348c614aea893.