feat: 🏗️ Added github action for test cases

Author: Sahil-Simform

.github/workflows/flutter_tests.yaml

@@ -0,0 +1,35 @@
+name: Flutter Tests
+
+on:
+  pull_request:
+
+jobs:
+  test:
+    name: Run Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          flutter-version: '3.10.0'
+          cache: true
+          cache-key: 'flutter-macos-stable-3.10.0-apple'
+          cache-path: '${{ runner.tool_cache }}/flutter/macos-stable-3.10.0-apple'
+          pub-cache-key: 'flutter-pub-macos-stable-3.10.0-apple'
+
+      - name: Get dependencies
+        run: flutter pub get
+
+      - name: Analyze project
+        run: flutter analyze
+
+      - name: Run tests
+        run: flutter test --coverage
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          file: ./coverage/lcov.info
+          fail_ci_if_error: false

README.md

@@ -3,7 +3,7 @@
 
 # ShowCaseView
 
-[![Build](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/actions/workflows/flutter.yaml/badge.svg?branch=master)](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/actions) [![showcaseview](https://img.shields.io/pub/v/showcaseview?label=showcaseview)](https://pub.dev/packages/showcaseview)
+[![showcaseview](https://img.shields.io/pub/v/showcaseview?label=showcaseview)](https://pub.dev/packages/showcaseview) [![Build](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/actions/workflows/flutter.yaml/badge.svg?branch=master)](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/actions) [![Tests](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/actions/workflows/flutter_tests.yaml/badge.svg?branch=master)](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/actions)
 
 A Flutter package allows you to Showcase/Highlight your widgets.