replace Travis-CI with GitHub Actions

Author: SethTisue

.github/workflows/ci.yml

@@ -0,0 +1,15 @@
+name: test
+on:
+  push:
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-java@v4
+      with:
+        distribution: temurin
+        java-version: 8
+    - uses: sbt/setup-sbt@v1
+    - name: Test
+      run: sbt test publishLocal

.github/workflows/cla.yml

@@ -0,0 +1,11 @@
+name: "Check Scala CLA"
+on:
+  pull_request:
+jobs:
+  cla-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Verify CLA
+        uses: scala/cla-checker@v1
+        with:
+          author: ${{ github.event.pull_request.user.login }}

.github/workflows/release.yml

@@ -0,0 +1,22 @@
+name: Release
+on:
+  push:
+    tags: ["*"]
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 8
+      - uses: sbt/setup-sbt@v1
+      - run: sbt versionCheck ci-release
+        env:
+          PGP_PASSPHRASE: ${{secrets.PGP_PASSPHRASE}}
+          PGP_SECRET: ${{secrets.PGP_SECRET}}
+          SONATYPE_PASSWORD: ${{secrets.SONATYPE_PASSWORD}}
+          SONATYPE_USERNAME: ${{secrets.SONATYPE_USERNAME}}