Move query history into extension (#19794)

* initial

* more

* Remove connectionId

* cleanup

* cleanup

* Remove core contributions, add to panel by default

* Add enabled state

* Update config

* cleanup

* Move

* Remove newlines

* update README

extensions/query-history/src/utils.ts

@@ -0,0 +1,13 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+/**
+ * Removes all newlines from the given string, replacing them with spaces
+ * @param str The original string
+ * @returns The string with all newlines replaced by spaces
+ */
+export function removeNewLines(str: string): string {
+	return str.replace(/\r\n/g, ' ').replace(/\n/g, ' ');
+}