ci: add valgrind check

.drone.yml

@@ -66,6 +66,36 @@ steps:
         "$test"
       done
 
+---
+kind: pipeline
+type: docker
+name: valgrind
+clone:
+  recursive: true
+  submodule_update_remote: true
+
+trigger:
+  branch:
+  - main
+
+steps:
+- name: valgrind
+  image: valgrind:latest
+  pull: if-not-exists
+  commands:
+    - |
+      set -e
+
+      git submodule update --init --recursive
+      conan build . \
+        -c tools.system.package_manager:mode=install \
+        -s build_type=Release \
+        -o enable_static_analysis=False \
+        -o enable_tests=True \
+        --build=missing
+
+      find ./build -type f -name "tests" -executable | xargs -I {} bash -c 'valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes --verbose --error-exitcode=255 {}' || exit 1
+
 ---
 kind: pipeline
 type: docker