<text> Tag IntelliSense Support (dotnet/aspnetcore-tooling#1675)

* <text> Tag IntelliSense Implementation

* Text node language context support

* Added Tests\n\nCommit migrated from a0f99cd14f

src/Razor/Microsoft.AspNetCore.Razor.Language/src/Legacy/CSharpCodeParser.cs

@@ -689,7 +689,7 @@ namespace Microsoft.AspNetCore.Razor.Language.Legacy
                         ParseCodeBlock(builder, block);
 
                         // ParseCodeBlock is responsible for parsing the insides of a code block (non-inclusive of braces).
-                        // Therefore, there's one of two cases after parsing: 
+                        // Therefore, there's one of two cases after parsing:
                         //  1. We've hit the End of File (incomplete parse block).
                         //  2. It's a complete parse block and we're at a right brace.
 

src/Razor/Microsoft.CodeAnalysis.Razor/src/Resources.resx

@@ -141,4 +141,7 @@
   <data name="TagHelper_PartialRequiredAttributeOperator" xml:space="preserve">
     <value>Required attribute '{0}' has a partial CSS operator. '{1}' must be followed by an equals.</value>
   </data>
+  <data name="MarkupTransition_Description" xml:space="preserve">
+    <value>Create a inline HTML element without tags.</value>
+  </data>
 </root>