Add workflows

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/.github/workflows/"
+    schedule:
+      interval: "weekly"

.github/workflows/test.yml

@@ -0,0 +1,33 @@
+name: test
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ master ]
+  pull_request:
+
+jobs:
+  test:
+    name: ${{ matrix.lisp }}
+    defaults:
+      run:
+        shell: bash -l {0}
+    strategy:
+      fail-fast: false
+      matrix:
+        lisp:
+        - sbcl
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/yitzchak/archlinux-cl:latest
+      options: --security-opt seccomp:unconfined
+    steps:
+    - name: Checkout Repository
+      uses: actions/checkout@v4
+    - name: Setup Lisp Environment
+      run: |
+        make-rc
+        asdf-add
+    - name: Run ANSI Tests
+      run: |
+        lisp -i ${{ matrix.lisp }} -e "(ql:quickload :constrictor-extrinsic/ansi-test)" -e "(constrictor-extrinsic/ansi-test:test :exit t)"