2482-V100-update-editorconfig-suggest-private-vars-with-underscore (#2483)

- Updates the editorconfig
- No changelog required

Author: giduac

Source/.editorconfig

@@ -102,6 +102,15 @@ dotnet_naming_rule.non_field_members_should_be_pascal_case.severity = suggestion
 dotnet_naming_rule.non_field_members_should_be_pascal_case.symbols = non_field_members
 dotnet_naming_rule.non_field_members_should_be_pascal_case.style = pascal_case
 
+# Naming rules for private variables with underscore prefix
+dotnet_naming_rule.private_members_with_underscore.symbols = private_fields
+dotnet_naming_rule.private_members_with_underscore.style = prefix_underscore
+dotnet_naming_rule.private_members_with_underscore.severity = suggestion
+dotnet_naming_symbols.private_fields.applicable_kinds = field
+dotnet_naming_symbols.private_fields.applicable_accessibilities = private
+dotnet_naming_style.prefix_underscore.capitalization = camel_case
+dotnet_naming_style.prefix_underscore.required_prefix = _
+
 # Symbol specifications
 
 dotnet_naming_symbols.interface.applicable_kinds = interface