chore: added basic jest testing support

also added an example test for the counter in the components.tsx file to demonstrate functionality of testing configuration. installed all dependencies for testing using --save-dev to make sure they are stored as dev dependencies

ref: N25B-212

tsconfig.jest.json

@@ -0,0 +1,12 @@
+{
+  "extends": "./tsconfig.app.json",
+  "compilerOptions": {
+    "verbatimModuleSyntax": false,
+    "jsx": "react-jsx",
+    "module": "ESNext",
+    "target": "ES2022",
+    "allowJs": true,
+    "esModuleInterop": true
+  },
+  "include": ["test"]
+}