chore: add .gitlab-ci.yml

.gitlab-ci.yml

@@ -0,0 +1,20 @@
+image: "rust:latest"
+
+default:
+  before_script:
+    - rustc --version
+    - cargo --version
+
+stages:
+  - test
+  - build
+
+test-code:
+  stage: test
+  script:
+    - cargo test
+
+build-code:
+  stage: build
+  script:
+    - cargo build --release