Migrate from Karma/Jasmine to vitest

vitest is the default in new Angular projects and will likely become
more preferred in the future.

Author: lberrymage

angular.json

@@ -116,15 +116,7 @@
                     }
                 },
                 "test": {
-                    "builder": "@angular/build:karma",
-                    "options": {
-                        "polyfills": ["zone.js", "zone.js/testing"],
-                        "tsConfig": "tsconfig.spec.json",
-                        "inlineStyleLanguage": "scss",
-                        "assets": ["src/favicon.ico", "src/assets"],
-                        "styles": ["src/styles.scss"],
-                        "scripts": []
-                    }
+                    "builder": "@angular/build:unit-test"
                 },
                 "lint": {
                     "builder": "@angular-eslint/builder:lint",