Cluster management/newdashboard task (#6060)

* initial commit: added cluster status notebook and dashboard task

* following the previous naming conventions

* endpoint widget changes to accomodatw naming changes

* management-proxy/mgmtproxy chnages

* updates to address the comments and added the new copy image with hover text.

* added user select for making the table selectable

* localize changes

* added the final documented notebook

* reset execution_count to 0 for all cells

* style changes

* updated the url to point to private repo

extensions/mssql/src/utils.ts

@@ -10,6 +10,7 @@ import * as crypto from 'crypto';
 import * as os from 'os';
 import * as findRemoveSync from 'find-remove';
 import * as constants from './constants';
+import * as fs from 'fs';
 
 const configTracingLevel = 'tracingLevel';
 const configLogRetentionMinutes = 'logRetentionMinutes';
@@ -29,6 +30,34 @@ export function getAppDataPath() {
 	}
 }
 
+/**
+ * Get a file name that is not already used in the target directory
+ * @param filePath source notebook file name
+ * @param fileExtension file type
+ */
+export function getTargetFileName(filePath: string): string {
+	const targetDirectory = os.homedir();
+	const fileExtension = path.extname(filePath);
+	const baseName = path.basename(filePath, fileExtension);
+	let targetFileName;
+	let idx = 0;
+	do {
+		const suffix = idx === 0 ? '' : `-${idx}`;
+		targetFileName = path.join(targetDirectory, `${baseName}${suffix}${fileExtension}`);
+		idx++;
+	} while (fs.existsSync(targetFileName));
+
+	return targetFileName;
+}
+
+export function fileExists(file: string): boolean {
+	return fs.existsSync(file);
+}
+
+export function copyFile(source: string, target: string): void {
+	fs.copyFileSync(source, target);
+}
+
 export function removeOldLogFiles(prefix: string): JSON {
 	return findRemoveSync(getDefaultLogDir(), { prefix: `${prefix}_`, age: { seconds: getConfigLogRetentionSeconds() }, limit: getConfigLogFilesRemovalLimit() });
 }