add unit tests for test coverage

Author: harshithad0703

.github/workflows/coverage-check.yml

@@ -0,0 +1,26 @@
+name: 'TS SDK - Unit Testing'
+
+on:
+  pull_request:
+    branches:
+      - development
+      - staging
+      - main
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+      checks: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run unit tests with coverage
+        uses: ArtiomTr/jest-coverage-report-action@v2
+        id: coverage
+        with:
+          test-script: npm run test:unit
+          threshold: 95