chore: add ci build

.github/workflows/main.yml

@@ -0,0 +1,30 @@
+name: GitHub Actions - CI
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - uses: actions/cache@v3
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - name: Set up JDK
+        uses: actions/setup-java@v3
+        with:
+          java-version: 21
+          distribution: 'temurin'
+      - name: Build with Gradle
+        run: ./gradlew clean build koverVerify koverXmlReport
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          files: ${{ github.workspace }}/build/reports/kover/report.xml
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

README.md

@@ -1,3 +1,5 @@
+![CI](https://github.com/tddworks/openai-kotlin/actions/workflows/main.yml/badge.svg)
+[![codecov](https://codecov.io/gh/tddworks/openai-kotlin/graph/badge.svg?token=ZHqC4RjnCf)](https://codecov.io/gh/tddworks/openai-kotlin)
 [![official project](http://jb.gg/badges/official.svg)](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
 
 # Multiplatform library template