Have robot spawn at spawn point

[danielbrownmsm]

currently spawns in a corner of the map. even better if spawn can be configurable, including initial heading

[danielbrownmsm]

• [x] make robot heading configurable
• [x] make exact robot start position configurable
• [x] add a setting for initial robot heading to main menu
• [x] add a setting for starting the robot a little to the left or right