Integrate fuzz runner into ci workflow file

Author: karalabe

.github/workflows/ci.yml

@@ -87,3 +87,21 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - run: cargo doc --all-features --no-deps
+
+  fuzz:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install nightly toolchain
+        run: rustup install nightly
+
+      - name: Install cargo-fuzz
+        run: cargo install cargo-fuzz
+
+      - name: Run all fuzzers for 60 seconds each
+        run: |
+          for target in $(cargo +nightly fuzz list); do
+            echo "Fuzzing $target..."
+            cargo +nightly fuzz run "$target" -- -max_total_time=60
+          done