Peek definition support for tables, views and stored procedures (#160)

* Add support for peek/go to definition
Add unit tests for definition

Microsoft/vscode-mssql#253 and Microsoft/vscode-mssql#268

* Format Strings

* Add integration tests

* Refactor variable names

* Remove test file

* Remove LIVE_CONNECTION definition

* Change method name

* Write files to a separate directory

* Refactor GetDefinition

* Remove unnecessary whitespace and modify variable name

* Check intellisense settings

* Refactor code to be scalable and modify tests

* Refactor to facilitate CodeGen

* Reorder methods

* Modify method to strip bracket syntax

* Add one_second constant

* Add comments

* Modify null check

* Modify GetSchema code to account for spaces

* Alter variable names and modify null checks

* Remove timeout callback and refactor null check

* remove LIVE_CONNECTION_TEST definition

src/Microsoft.SqlTools.ServiceLayer/Utility/TextUtilities.cs

@@ -109,5 +109,19 @@ namespace Microsoft.SqlTools.ServiceLayer.Utility
                 || ch == '('
                 || ch == ')';
         }
+
+        /// <summary>
+        /// Remove square bracket syntax from a token string
+        /// </summary>
+        /// <param name="tokenText"></param>
+        /// <returns> string with outer brackets removed</returns>
+        public static string RemoveSquareBracketSyntax(string tokenText)
+        {
+            if(tokenText.StartsWith("[") && tokenText.EndsWith("]"))
+            {
+                return tokenText.Substring(1, tokenText.Length - 2);
+            }
+            return tokenText;
+        }
     }
 }