XML output is truncated (#7748)

* QueryExecutionOptions change

* add config points

* Change api type used

* Revert "QueryExecutionOptions change"

This reverts commit 7adc3b032b5e4bc92234d337f0a145f0963c2d34.

Let's not change the azdata file.

* Change the signature of this api

* Change the event

* Change SqlCMD to use the API properly

* Add type

* Change type to interface - handle existing files

* Remove unused import

* Delete useless code

* Remove unnecessary code

* Fix the interface

* remove whitespace

extensions/mssql/package.json

@@ -128,6 +128,11 @@
           "default": true,
           "description": "%mssql.query.displayBitAsNumber%"
         },
+        "mssql.query.maxXmlCharsToStore": {
+          "type": "number",
+          "default": 2097152,
+          "description": "%mssql.query.maxXmlCharsToStore%"
+        },
         "mssql.format.alignColumnDefinitionsInColumns": {
           "type": "boolean",
           "description": "%mssql.format.alignColumnDefinitionsInColumns%",

extensions/mssql/package.nls.json

@@ -38,6 +38,7 @@
 
 	"mssql.configuration.title": "MSSQL configuration",
 	"mssql.query.displayBitAsNumber": "Should BIT columns be displayed as numbers (1 or 0)? If false, BIT columns will be displayed as 'true' or 'false'",
+	"mssql.query.maxXmlCharsToStore": "Number of XML characters to store after running a query",
 	"mssql.format.alignColumnDefinitionsInColumns": "Should column definitions be aligned?",
 	"mssql.format.datatypeCasing": "Should data types be formatted as UPPERCASE, lowercase, or none (not formatted)",
 	"mssql.format.keywordCasing": "Should keywords be formatted as UPPERCASE, lowercase, or none (not formatted)",