chore: add github actions

.github/workflows/check-valgrind.yaml

@@ -0,0 +1,19 @@
+name: Check valgrind
+on:
+  push:
+
+jobs:
+  check-valgrind:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v5
+
+      - name: Install build dependencies
+        run: sudo apt-get update && sudo apt-get install -y build-essential valgrind
+
+      - name: Build program
+        run: make
+
+      - name: Run valgrind
+        run: valgrind -s --leak-check=full --error-exitcode=1 ./bin/program

.github/workflows/run-tests.yaml

@@ -0,0 +1,16 @@
+name: Run tests
+on:
+  push:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v5
+
+      - name: Install build dependencies
+        run: sudo apt-get update && sudo apt-get install -y build-essential
+
+      - name: Run tests
+        run: make test