Variation

[jannikbusse]

Refactors the variation tool and road generation executable. The changes are directed at the internal data structures and function call hierarchy. Fixes minor bugs

Variation tool:

• split run() function into parse and execute functions
• created config struct that is parsed as argument to functions
• ctypes config struct is passed as argument to library
• -o flag supports abosulte and relative paths and does not remove all xml files in target directory
• fixed a bug where the generation crashes if a path to a directory is provided with -o

Road gen Executable

• Uses config struct to pass arguments between functions
• Implemented api function that runs the generation and is provided a ctypes config struct

Road gen Library

• Removed default namespaces