build.bat: Add step to regenerate source code

Ensure we are running the latest changes.
Typically happens when merging multiple PRs at the same time.

Author: angularsen

Build/build.bat

@@ -3,6 +3,7 @@ SET ROOT=%~dp0..
 rmdir /Q /S %ROOT%\Artifacts
 
 call powershell -NoProfile %ROOT%\Build\UpdateAssemblyInfo.ps1
+call powershell -ExecutionPolicy Bypass -NoProfile -File %ROOT%\UnitsNet\Scripts\GenerateUnits.ps1
 call %ROOT%\Build\nuget-restore.bat
 call %ROOT%\Build\build-src-release.bat
 call %ROOT%\Build\build-tests.bat