Add github actions

Author: laurynas

.github/workflows/main.yml

@@ -0,0 +1,26 @@
+name: Build
+on: [push,pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version:
+          - 2.0
+          - 2.5
+          - 2.6
+          - 2.7
+          - 3.0
+          - ruby-head
+          - ruby-head-clang
+          - jruby-9.1
+          - jruby-head
+    name: Ruby ${{ matrix.ruby-version }} sample
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+      - env:
+          DETECTLANGUAGE_API_KEY: ${{ secrets.DETECTLANGUAGE_API_KEY }}
+        run: bundle exec rake spec