Adding database specific settings, cancel migration and other dark UI fixes (#14626)

* Made dashboard dark ui compat

* foundations for sql vm

* WIP

* Added cancel migration
Added refresh migraiton table
Added multi db config

* disabling cancel migration button if the migration is not in progress.

* Addressing some PR based coments
- Removing (s) from loc strings
- Adding return type to cancel migration
- removing _ from public vars
- localizing strings
- Adding name to dialogs for telemetry

* Adding todo comment for offline mode

extensions/sql-migration/src/models/stateMachine.ts

@@ -52,15 +52,15 @@ export interface NetworkShare {
 export interface DatabaseBackupModel {
 	migrationCutover: MigrationCutover;
 	networkContainerType: NetworkContainerType;
-	networkShareLocation: string;
+	networkShareLocations: string[];
 	windowsUser: string;
 	password: string;
 	subscription: azureResource.AzureResourceSubscription;
 	storageAccount: StorageAccount;
 	storageKey: string;
 	azureSecurityToken: string;
-	fileShare: azureResource.FileShare;
-	blobContainer: azureResource.BlobContainer;
+	fileShares: azureResource.FileShare[];
+	blobContainers: azureResource.BlobContainer[];
 }
 export interface Model {
 	readonly sourceConnectionId: string;
@@ -91,6 +91,8 @@ export class MigrationStateModel implements Model, vscode.Disposable {
 	public _storageAccounts!: StorageAccount[];
 	public _fileShares!: azureResource.FileShare[];
 	public _blobContainers!: azureResource.BlobContainer[];
+	public _refreshNetworkShareLocation!: azureResource.BlobContainer[];
+	public _targetDatabaseNames!: string[];
 
 	public _migrationController!: SqlMigrationController;
 	public _migrationControllers!: SqlMigrationController[];
@@ -102,7 +104,7 @@ export class MigrationStateModel implements Model, vscode.Disposable {
 	private _skuRecommendations: SKURecommendations | undefined;
 	private _assessmentResults: mssql.SqlMigrationAssessmentResultItem[] | undefined;
 
-
+	public refreshDatabaseBackupPage!: boolean;
 
 	constructor(
 		private readonly _extensionContext: vscode.ExtensionContext,
@@ -467,7 +469,7 @@ export class MigrationStateModel implements Model, vscode.Disposable {
 					},
 					SourceLocation: {
 						FileShare: {
-							Path: this._databaseBackup.networkShareLocation,
+							Path: '',
 							Username: this._databaseBackup.windowsUser,
 							Password: this._databaseBackup.password,
 						}
@@ -482,19 +484,19 @@ export class MigrationStateModel implements Model, vscode.Disposable {
 			}
 		};
 
-		this._migrationDbs.forEach(async (db) => {
+		this._migrationDbs.forEach(async (db, index) => {
 
 			requestBody.properties.SourceDatabaseName = db;
 			try {
+				requestBody.properties.BackupConfiguration.SourceLocation.FileShare.Path = this._databaseBackup.networkShareLocations[index];
 				const response = await startDatabaseMigration(
 					this._azureAccount,
 					this._targetSubscription,
 					this._migrationController?.properties.location!,
 					this._targetServerInstance,
-					db,
+					this._targetDatabaseNames[index],
 					requestBody
 				);
-
 				if (response.status === 201) {
 					MigrationLocalStorage.saveMigration(
 						currentConnection!,