ci: add afl fuzz stage

fuzz for 1 min to quickly detect e.g. incorrect asserts

.github/workflows/ci.yml

@@ -63,3 +63,18 @@ jobs:
           rustup component add clippy
       - name: "Check linting"
         run: make lint
+  fuzz:
+    name: Fuzz
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v3
+      - name: "Setup toolchain"
+        run: |
+          rustup update nightly
+          rustup default nightly
+          cargo install afl
+      - name: "Fuzz"
+        run: |
+          echo core | sudo tee /proc/sys/kernel/core_pattern
+          make afl_quick