Move CI from Travis to GitHub Actions (TheAlgorithms#388)

Author: siriak

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup .NET SDK
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: 6.x
+      - name: Restore
+        run: dotnet restore
+      - name: Build
+        run: dotnet build --no-restore
+      - name: Test
+        run: dotnet test --no-restore --collect "XPlat Code Coverage"
+      - name: Upload code coverage to Codecov
+        run: bash <(curl -s https://codecov.io/bash)

.travis.yml

@@ -3,7 +3,6 @@
 # The Algorithms - C#
 
 [![Discord chat](https://img.shields.io/discord/808045925556682782.svg?logo=discord&colorB=7289DA)](https://discord.gg/c7MnfGFGa6)
-[![Build Status](https://app.travis-ci.com/TheAlgorithms/C-Sharp.svg?branch=master)](https://app.travis-ci.com/TheAlgorithms/C-Sharp)
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/58895a2795bd48a8b3b7eb6ebe22d576)](https://www.codacy.com/gh/TheAlgorithms/C-Sharp/dashboard?utm_source=github.com&utm_medium=referral&utm_content=TheAlgorithms/C-Sharp&utm_campaign=Badge_Grade)
 [![codecov](https://codecov.io/gh/TheAlgorithms/C-Sharp/branch/master/graph/badge.svg)](https://codecov.io/gh/TheAlgorithms/C-Sharp)
 [![Donate](https://liberapay.com/assets/widgets/donate.svg)](https://liberapay.com/TheAlgorithms/donate)