Add CI build action

Closes #3

Author: migesok

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on: [ push, pull_request ]
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: coursier/cache-action@v6
+
+      # SBT 1 base JDK version is 1.8
+      - name: setup Java 8
+        uses: actions/setup-java@v4
+        with:
+          java-version: '8'
+          distribution: 'temurin'
+          cache: 'sbt'
+
+      - name: setup SBT
+        uses: sbt/setup-sbt@v1
+
+      - name: build
+        run: sbt clean buildFull