[EngSys] add VS Code vitest settings for core packages (#31583)

The vtest VS code extension
(https://marketplace.visualstudio.com/items?itemName=vitest.explorer)
works well for unit tests but not so for other packages because most of
them does not run properly without dev-tool.

Deleting vitest config files for healthinsights-radiologyinsights-rest
because it hasn't been migrated to use vitest yet.

Author: jeremymeng

.gitignore

@@ -192,3 +192,6 @@ sdk/template/template-dpg/src/src
 # sshkey
 sdk/**/sshKey
 sdk/**/sshKey.pub
+
+# vitest results
+.vite/vitest/results.json

.vscode/settings.json

@@ -36,5 +36,9 @@
     "**/*.d.ts": true,
     "**/test-browser/*": true
   },
-  "typescript.tsdk": "./sdk/core/core-rest-pipeline/node_modules/typescript/lib"
+  "typescript.tsdk": "./sdk/core/core-rest-pipeline/node_modules/typescript/lib",
+  "vitest.vitestPackagePath": "common/tools/dev-tool/node_modules/vitest/package.json",
+  "vitest.experimentalStaticAstCollect": true,
+  "vitest.configSearchPatternExclude": "{**/node_modules/**,**/.*/**,**/*.d.ts,eng/**,samples/**}",
+  "vitest.nodeEnv": {}
 }

sdk/healthinsights/health-insights-radiologyinsights-rest/vitest.browser.config.ts

@@ -0,0 +1 @@
+export default ["sdk/core/*/vitest.config.ts"];