* Added support for ".ubtignore" files that can be put in a folder to make ubt ignore the folder and its subfolder
* Fixed bug where project's plugin and source folder were visited multiple times (look in FileMetadataPreftch.cs)
* Changed so Lazy<File/DirectoryItem> is resolved directly on windows platform and only do the extra refresh on mac/linux (there seems to be some bugs on those platforms and we don't want to pay extra cost on windows)
* Added runtimeconfig.template.json and changed UnrealBuildTool to use server gc and a few more settings that improve performance
* Added so all file traversing paths is aware of .uplugin
* Added debug code to be able to write out which files that have been touched during UBT execution. This can serve as a way to identify places to add .ubtignore files
#rb Joe.Kirchoff
#preflight 62f685f8cf7afa018ba0a4a5
#ROBOMERGE-AUTHOR: henrik.karlsson
#ROBOMERGE-SOURCE: CL 21360427 via CL 21371108 via CL 21371121 via CL 21371139
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v972-20964824)
[CL 21371637 by henrik karlsson in ue5-main branch]
Add a layer of caching to avoid running msbuild as much as possible.
#jira UE-109181
#rb ben.marsh
[CL 17102399 by jonathan adamczewski in ue5-main branch]
UnrealBuild -> Unreal for EngineDirectory, RootDirectory, IsEngineInstalled, UnrealBuildToolPath
Remove CommandUtils EngineDirectory, RootDirectory, IsEngineInstalled - use equvalents from UnrealBuildBase.Unreal
#jira none
[CL 16648181 by jonathan adamczewski in ue5-main branch]
RootDirectory, EngineDirectory, UnrealBuildToolPath are now found in BuildUtilities' UnrealBuild namesapce.
The way these are computed has changed. Previously, it was assumed that the application is UnrealBuildTool, and paths were constructed relative to that assembly.
Now, the assumption is that the process is located under a "Engine/Build/DotNET" sub-path and paths are constructed relative to that.
#jira none
[CL 16607440 by jonathan adamczewski in ue5-main branch]
- Does not have the changes for new .ini file locations
#rb ben.marsh
#ROBOMERGE-SOURCE: CL 12676628 via CL 12676630 via CL 12676633
#ROBOMERGE-BOT: RELEASE (Release-Engine-Staging -> Main) (v675-12543919)
[CL 12676637 by josh adams in Main branch]
