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/constants/iconPathHelper.ts

@@ -12,6 +12,7 @@ export interface IconPath {
 
 export class IconPathHelper {
 	public static copy: IconPath;
+	public static discard: IconPath;
 	public static refresh: IconPath;
 	public static cutover: IconPath;
 	public static sqlMigrationLogo: IconPath;
@@ -27,6 +28,10 @@ export class IconPathHelper {
 			light: context.asAbsolutePath('images/copy.svg'),
 			dark: context.asAbsolutePath('images/copy.svg')
 		};
+		IconPathHelper.discard = {
+			light: context.asAbsolutePath('images/discard.svg'),
+			dark: context.asAbsolutePath('images/discard.svg')
+		};
 		IconPathHelper.refresh = {
 			light: context.asAbsolutePath('images/refresh.svg'),
 			dark: context.asAbsolutePath('images/refresh.svg')