Add global usings (#668)

* Use global usings

* Fix namespace declarations for test projects

test/.editorconfig

@@ -1,35 +1,107 @@
 root = false
-[*.cs]
 
+[*.cs]
 # Default severity for analyzer diagnostics with category 'StyleCop.CSharp.DocumentationRules'
 dotnet_analyzer_diagnostic.category-StyleCop.CSharp.DocumentationRules.severity = none
 
-# CA1707: Identifiers should not contain underscores
-dotnet_diagnostic.CA1707.severity = none
+# IDE0055: Fix formatting
+dotnet_diagnostic.IDE0055.severity = warning
 
-# SA1600: Elements should be documented
-dotnet_diagnostic.SA1600.severity = none
+# SA1101: Prefix local calls with this
+dotnet_diagnostic.SA1101.severity = none
 
-# SA1601: Partial elements should be documented
-dotnet_diagnostic.SA1601.severity = none
+# SA1633: File should have header
+dotnet_diagnostic.SA1633.severity = none
 
-# SA1200: Using directives should be placed correctly
-dotnet_diagnostic.SA1200.severity = none
+# SA1201: Elements should appear in the correct order
+dotnet_diagnostic.SA1201.severity = none
+
+# SA1202: Public members should come before private members
+dotnet_diagnostic.SA1202.severity = none
+
+# SA1309: Field names should not begin with underscore
+dotnet_diagnostic.SA1309.severity = none
+
+# SA1404: Code analysis suppressions should have justification
+dotnet_diagnostic.SA1404.severity = none
+
+# SA1516: Elements should be separated by a blank line
+dotnet_diagnostic.SA1516.severity = none
+
+# CA1303: Do not pass literals as localized parameters
+dotnet_diagnostic.CA1303.severity = none
+
+# CSA1204: Static members should appear before non-static members
+dotnet_diagnostic.SA1204.severity = none
+
+# IDE0052: Remove unread private members
+dotnet_diagnostic.IDE0052.severity = warning
+
+# IDE0063: Use simple 'using' statement
+csharp_prefer_simple_using_statement = false:suggestion
+
+# IDE0018: Variable declaration can be inlined
+dotnet_diagnostic.IDE0018.severity = warning
+
+# SA1625: Element documenation should not be copied and pasted
+dotnet_diagnostic.SA1625.severity = none
+
+# IDE0005: Using directive is unnecessary
+dotnet_diagnostic.IDE0005.severity = warning
+
+# SA1117: Parameters should be on same line or separate lines
+dotnet_diagnostic.SA1117.severity = none
+
+# SA1404: Code analysis suppression should have justification
+dotnet_diagnostic.SA1404.severity = none
+
+# SA1101: Prefix local calls with this
+dotnet_diagnostic.SA1101.severity = none
+
+# SA1633: File should have header
+dotnet_diagnostic.SA1633.severity = none
+
+# SA1649: File name should match first type name
+dotnet_diagnostic.SA1649.severity = none
+
+# SA1402: File may only contain a single type
+dotnet_diagnostic.SA1402.severity = none
+
+# CA1814: Prefer jagged arrays over multidimensional
+dotnet_diagnostic.CA1814.severity = none
+
+# RCS1194: Implement exception constructors.
+dotnet_diagnostic.RCS1194.severity = none
+
+# CA1032: Implement standard exception constructors
+dotnet_diagnostic.CA1032.severity = none
+
+# CA1826: Do not use Enumerable methods on indexable collections. Instead use the collection directly
+dotnet_diagnostic.CA1826.severity = none
+
+# RCS1079: Throwing of new NotImplementedException.
+dotnet_diagnostic.RCS1079.severity = warning
+
+# RCS1057: Add empty line between declarations.
+dotnet_diagnostic.RCS1057.severity = none
+
+# RCS1057: Validate arguments correctly
+dotnet_diagnostic.RCS1227.severity = none
+
+# IDE0004: Remove Unnecessary Cast
+dotnet_diagnostic.IDE0004.severity = warning
+
+# CA1810: Initialize reference type static fields inline
+dotnet_diagnostic.CA1810.severity = none
+
+# IDE0044: Add readonly modifier
+dotnet_diagnostic.IDE0044.severity = warning
+
+# RCS1047: Non-asynchronous method name should not end with 'Async'.
+dotnet_diagnostic.RCS1047.severity = none
+
+# RCS1090: Call 'ConfigureAwait(false)'.
+dotnet_diagnostic.RCS1090.severity = warning
 
 # CS1591: Missing XML comment for publicly visible type or member
-dotnet_diagnostic.CS1591.severity = none
-
-# SA1210: Using directives should be ordered alphabetically by namespace
-dotnet_diagnostic.SA1210.severity = none
-
-# CA1034: Nested types should not be visible
-dotnet_diagnostic.CA1034.severity = none
-
-# CA2000: Dispose objects before losing scope
-dotnet_diagnostic.CA2000.severity = none
-
-# SA1118: Parameter should not span multiple lines
-dotnet_diagnostic.SA1118.severity = none
-
-# CA1031: Do not catch general exception types
-dotnet_diagnostic.CA1031.severity = none
+dotnet_diagnostic.CS1591.severity = none