+ Added OmsiStrArrayPtr attribute to marshal arrays of strings

[space928]

• Added method to read string arrays from memory
• Added metadata
• Finished* adding properties to OmsiMap
• Many new structs (some of which work!)
• Added skeleton for OmsiStringList
• Fixed OmsiRoadVehicleInst
• Refactoring + documentation

As it stands it compiles and runs but there are a few bugs with some of the properties in OmsiMap not dereferencing correctly.