* Improved detection of UE solution by using a special section outputted to the solution, this replaces the need to add a special comment into the solution (or relying on naming convention as was the fallback). This still works with the old conventions to support being used in a UE4 solution.
* Inverted Quickbuild menu to dynamically populate the platforms instead - this allows UnrealVS to data drive the platform list. Unfortunatley due to how visual studio UI handles dynamic lists we can not have a menu that is dynamic and has children. Thus configurations are now hard coded instead - these are still only visible when they are actually supported, but it means UnrealVS needs to be updated when new configurations are added.
* Fixed issue setting debug arguments to net core projects (due to the change to launchSettings.json to store the debug arguments)
#rb ben.marsh
#jira UE-100134, UE-95503
[CL 14444525 by Joakim Lindqvist in ue5-main branch]
Fixed Quick Build menu being empty sometimes.
Fixed issue loading .suo settings
Bumped version to 1.56
#jira UE-78446
#rb none
[CL 7867809 by Joakim Lindqvist in Dev-Build branch]
