Update clang-format to 10.0 (#7389)

This commit removes our local copy of clang-format 8 and replaces it
with a newly-built nuget package containing clang-format 10.

This resolves the inconsistency between our version of clang-format and
the one shipped in Visual Studio.

A couple minor format changes were either required or erroneously forced
upon us--chief among them is a redistribution of `*`s around SAL
annotations in inline class members of COM classes. Don't ask why; I
couldn't figure it out.

We had some aspirational goals for our formatting, which were left in
but commented out. Enabling them changes our format a little more than
I'm comfortable with, so I uncommented them and locked them to the
format style we've been using for the past year. We may not love it, but
our aspirations may not matter here any longer. Consistent formatting is
better than perfect formatting.

.clang-format

@@ -1,17 +1,19 @@
 
 AccessModifierOffset: -4
 AlignAfterOpenBracket: Align
-#AllowAllArgumentsOnNextLine: false
+AllowAllArgumentsOnNextLine: true
+AlignConsecutiveMacros: false
 AlignConsecutiveAssignments: false
 AlignConsecutiveDeclarations: false
-#AllowAllConstructorInitializersOnNextLine: false
+AllowAllConstructorInitializersOnNextLine: true
 AlignEscapedNewlines: Left
 AlignOperands: true
 AlignTrailingComments: false
 AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: Never
 AllowShortFunctionsOnASingleLine: Inline
 AllowShortCaseLabelsOnASingleLine: false
-AllowShortIfStatementsOnASingleLine: false
+AllowShortIfStatementsOnASingleLine: Never
 #AllowShortLambdasOnASingleLine: Inline
 AllowShortLoopsOnASingleLine: false
 AlwaysBreakAfterReturnType: None
@@ -20,6 +22,7 @@ AlwaysBreakTemplateDeclarations: Yes
 BinPackArguments: false
 BinPackParameters: false
 BraceWrapping:
+  AfterCaseLabel: true
   AfterClass: true
   AfterControlStatement: true
   AfterEnum: true
@@ -47,6 +50,7 @@ ConstructorInitializerAllOnOneLineOrOnePerLine: true
 ConstructorInitializerIndentWidth: 4
 ContinuationIndentWidth: 4
 Cpp11BracedListStyle: false
+DeriveLineEnding: true
 DerivePointerAlignment: false
 FixNamespaceComments: false
 IncludeBlocks: Regroup
@@ -73,7 +77,7 @@ ReflowComments: false
 SortIncludes: false
 SortUsingDeclarations: true
 SpaceAfterCStyleCast: false
-#SpaceAfterLogicalNot: false
+SpaceAfterLogicalNot: false
 SpaceAfterTemplateKeyword: false
 SpaceBeforeAssignmentOperators: true
 SpaceBeforeCpp11BracedList: false
@@ -88,6 +92,6 @@ SpacesInCStyleCastParentheses: false
 SpacesInContainerLiterals: false
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
-Standard: Cpp11
+Standard: Latest
 TabWidth: 4
 UseTab: Never