Improve general functionality and usability

[GustavoSilvera]

• Replace existing LevelScript with GameMode. This allows us to not need to carry the (large) map blueprint files (ue4 binary) and we can use the vanilla Carla maps. By default we spawn the EgoVehicle in the first of the recommended Carla locations.
• Use FTransforms in place of several FVector/FRotator (location/rotation) pairs to improve performance and readability.
• Template metaprogramming for repeated ReadConfigValue<T> functions
• Adding custom LOG macros for improved DReyeVR logging with file, function, and line number attached. Done in precompilation to avoid runtime performance overhead.
• Enable make check to check that individual files within folders were also present
• Added DReyeVRFactory so the EgoVehicle and EgoSensor are spawned with the same "Factory" mechanisms as the other vehicles/sensors, allowing for PythonAPI to spawn the EgoVehicle if it is not in the map. There is a toggle to enable/disable EgoVehicle auto-spawn, else feel free to spawn just like any other Carla vehicle.
• Improved dash by making the turn signals blink every ~0.4s and fixed a bug with the ToggleReverse function sometimes messing up (especially in replay)
• Fixed bugs and inconsistencies with replayer media control and special actions such as toggling reverse/turn signals in replay.
• Moved all blueprint content out of the Carla content (which is now entirely untouched) and to a separate /Game/Content/DReyeVR/ repository (renamed to potentially support future EgoVehicles of different models)
• Improve SRanipal situation, link to specific (known supported) versions. Includes workaround to avoid SRanipal patch.
• Create CHANGELOG.md
• Label release as DReyeVR 0.1.0

[GustavoSilvera]

Be sure to check out the CHANGELOG.md to get a good summary of what is changed in this version

[ajdroid]

merging based on the code review session