Add IR Migration configuration Validation to SQL Migration extension (#21386)

* re-factor and consolidate wizard pages

* validation WIP 11/10

* validate ir dialog

* navigation fixes

* bump version to 1.2.0

* add resource strings and fix navigatin issue

* map validation state to resource string clean up

* address review comments

* fix typos, address review comments

* address review feedback, readability

* fix res string, validation check, col width

* bug fixes, nav, sqldb migration

* fix nav/refresh/visibility issues

* fix nav issues, cancel pending validation items

* update error text / position

* fix localization bug

extensions/sql-migration/package.json

@@ -2,7 +2,7 @@
   "name": "sql-migration",
   "displayName": "%displayName%",
   "description": "%description%",
-  "version": "1.1.3",
+  "version": "1.2.0",
   "publisher": "Microsoft",
   "preview": false,
   "license": "https://raw.githubusercontent.com/Microsoft/azuredatastudio/main/LICENSE.txt",