Boxing of bool is to compute hashcode is causing excessive allocations

[jebriede]

The HashCodeCombiner takes an object parameter in its AddObject method and when passed a bool, it boxes it as a Boolean object to then compute the hashcode. This allocates Boolean objects that are short-lived and not necessary.

Name                                                            	Inc %	           Inc
 Type System.Boolean                                            	  1.6	   123,456,256
+ clr!?                                                         	  1.6	   123,456,240
 + nuget.dependencyresolver.core!HashCodeCombiner.AddObject     	  0.8	    63,635,872
 + nuget.versioning!NuGet.Shared.HashCodeCombiner.AddObject(!!0)	  0.8	    59,820,380