Replace travis with github action

.travis.yml

@@ -1,56 +0,0 @@
-# Travis-CI configuration file for SuperTuxKart 
-#
-# Configuration manual:
-# http://docs.travis-ci.com/user/build-configuration/
-#
-sudo: false
-language: cpp
-os:
-  - linux
-#  - osx
-compiler:
-  - gcc
-  - clang
-
-matrix:
-#  include:
-#    - osx_image: xcode11.3
-  fast_finish: true
-
-env:
-  matrix:
-    - BUILD_TYPE="Debug" SERVER_ONLY="OFF"
-    - BUILD_TYPE="Debug" SERVER_ONLY="ON"
-    - BUILD_TYPE="Release" SERVER_ONLY="OFF"
-    - BUILD_TYPE="Release" SERVER_ONLY="ON"
-
-addons:
-  apt:
-    packages:
-    - build-essential
-    - cmake
-    - libbluetooth-dev
-    - libcurl4-gnutls-dev
-    - libfreetype6-dev
-    - libharfbuzz-dev
-    - libjpeg-dev
-    - libogg-dev
-    - libopenal-dev
-    - libpng-dev
-    - libsdl2-dev
-    - libvorbis-dev
-    - pkg-config
-    - zlib1g-dev
-
-before_script:
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update && brew bundle; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo mkdir -p /usr/local/include/; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then sudo ln -s /System/Library/Frameworks/OpenGL.framework/Versions/A/Headers/ /usr/local/include/GL; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then export CMAKE_PREFIX_PATH=/usr/local/opt/freetype/:/usr/local/opt/curl/:/usr/local/opt/libogg/:/usr/local/opt/libogg/:/usr/local/opt/libvorbis/:/usr/local/opt/openssl\@1.1/:/usr/local/opt/harfbuzz/; fi
-
-script:
-  - mkdir "build"
-  - cd "build"
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then /usr/local/opt/cmake/bin/cmake .. -DFREETYPE_INCLUDE_DIRS=/usr/local/opt/freetype/include/freetype2/ -DOPENAL_INCLUDE_DIR=/usr/local/opt/openal-soft/include/ -DOPENAL_LIBRARY=/usr/local/opt/openal-soft/lib/libopenal.dylib -DFREETYPE_LIBRARY=/usr/local/opt/freetype/lib/libfreetype.dylib -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DSERVER_ONLY=$SERVER_ONLY -DCHECK_ASSETS=off -DBUILD_RECORDER=off; fi
-  - if [[ "$TRAVIS_OS_NAME" != "osx" ]]; then cmake .. -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DSERVER_ONLY=$SERVER_ONLY -DCHECK_ASSETS=off -DBUILD_RECORDER=off; fi
-  - make VERBOSE=1 -j3

README.md

@@ -1,5 +1,5 @@
 # SuperTuxKart
-[![Build Status](https://travis-ci.com/supertuxkart/stk-code.svg?branch=master)](https://travis-ci.com/supertuxkart/stk-code)
+[![Build Status](https://github.com/supertuxkart/stk-code/workflows/main/badge.svg?branch=master)](https://github.com/supertuxkart/stk-code/actions?query=workflow%3Amain)
 [![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/github/supertuxkart/stk-code?svg=true&branch=master)](https://ci.appveyor.com/project/supertuxkart/stk-code)
 [![#supertuxkart on the freenode IRC network](https://img.shields.io/badge/freenode-%23supertuxkart-brightgreen.svg)](https://webchat.freenode.net/?channels=supertuxkart)