Update SOS to resolve first level byref fields

[AaronRobinsonMSFT]

This feature adds support for resolving byref fields via SOS. Used the dotnet/runtime RefFields test to validate. A design decision to retain the actual value was made in the display as opposed to resolving to the target and showing that in the pretty print.

There is a fair bit of whitespace change. Recommend using https://github.com/dotnet/diagnostics/pull/2829/files?diff=split&w=1 to view files.

Before:

0:000> !DumpVC 00007ff943c82c78 @rbp-10h
Name:        InvalidCSharp.WithRefField
MethodTable: 00007ff943c82c78
EEClass:     00007ff943c78938
Size:        24(0x18) bytes
File:        D:\runtime\artifacts\tests\coreclr\windows.x64.Release\Loader\classloader\RefFields\Validate\InvalidCSharp.dll
Fields:
              MT    Field   Offset                 Type VT     Attr            Value Name
0000000000000000  4000002        0                BYREF  0 instance 000000e9f5f7d1e8 Str
0:000> !DumpObj /d 000000e9f5f7d1e8
<Note: this object has an invalid CLASS field>
Invalid object

After:

0:000> !DumpVC 00007ff943c72c78 @rbp-10h
Name:        InvalidCSharp.WithRefField
MethodTable: 00007ff943c72c78
EEClass:     00007ff943c68938
Size:        24(0x18) bytes
File:        D:\runtime\artifacts\tests\coreclr\windows.x64.Release\Loader\classloader\RefFields\Validate\InvalidCSharp.dll
Fields:
              MT    Field   Offset                 Type VT     Attr            Value Name
0000000000000000  4000002        0                BYREF  0 instance 0000001833d7d2f8 Str
0:000> !DumpObj /d 00000177a0e73d68
Name:        System.String
MethodTable: 00007ff94393d710
EEClass:     00007ff943949050
Tracked Type: false
Size:        70(0x46) bytes
File:        D:\runtime\artifacts\tests\coreclr\windows.x64.Debug\Tests\Core_Root\System.Private.CoreLib.dll
String:      Validate_Create_RefField
Fields:
              MT    Field   Offset                 Type VT     Attr            Value Name
00007ff9438d2580  40002f7        8         System.Int32  1 instance               24 _stringLength
00007ff94388b2f8  40002f8        c          System.Char  1 instance               56 _firstChar
00007ff94393d710  40002f6       e8        System.String  0   static 00000177a0e61240 Empty

Contributes to dotnet/runtime#63768

[AaronRobinsonMSFT]

/cc @noahfalk @tommcdon @davidwrighton

[noahfalk]

Thanks @AaronRobinsonMSFT, lgtm other than a suggestion on the failure case.
@mikem8361 what do you think of it?

[mikem8361]

The Windows x86 CI failure is a build problem.