Enable RS0102 (Braces must not have blank lines between them)

This change excludes src/Compilers from the analysis.

Author: sharwell

eng/config/rulesets/Shipping.ruleset

@@ -116,7 +116,6 @@
     <Rule Id="RS0027" Action="Error" />
     <Rule Id="RS0040" Action="None" /> <!-- Defaultable types should have defaultable fields -->
     <Rule Id="RS0101" Action="None" /> <!-- Avoid multiple blank lines -->
-    <Rule Id="RS0102" Action="None" /> <!-- Braces must not have blank lines between them -->
   </Rules>
   <Rules AnalyzerId="Microsoft.NetCore.Analyzers" RuleNamespace="Microsoft.NetCore.Analyzers.ImmutableCollections">
     <Rule Id="RS0012" Action="Warning" />

src/Compilers/.editorconfig

@@ -11,3 +11,6 @@ csharp_style_var_elsewhere = false:none
 
 # RS0100: Statements must be placed on their own line
 dotnet_diagnostic.RS0100.severity = none
+
+# RS0102: Braces must not have blank lines between them
+dotnet_diagnostic.RS0102.severity = none