add ci integration

.gitlab-ci.yml

@@ -0,0 +1,39 @@
+image: cirrusci/flutter
+
+stages:
+  - build
+
+flutter_build_android:
+  stage: build
+  before_script:
+    - flutter packages get
+    - flutter clean
+  script:
+    - flutter build apk --target-platform android-arm64
+    - mv build/app/outputs/apk/release/app-release.apk ./notes.apk
+  artifacts:
+    paths:
+      - notes.apk
+
+linux_build:
+  stage: build
+  script:
+    - apt-get update
+    - apt-get install -y --no-install-recommends cmake ninja-build clang build-essential pkg-config libgtk-3-dev liblzma-dev lcov libvlc-dev vlc libsecret-1-dev libjsoncpp-dev
+    - flutter config --enable-linux-desktop
+    - flutter packages get
+    - flutter build linux
+  artifacts:
+    paths:
+      - build/linux/x64/release/bundle/*
+
+
+flutter_lint:
+  stage: build
+  script:
+    - flutter format . --output none --set-exit-if-changed
+
+flutter_analyze:
+  stage: build
+  script:
+    - flutter analyze ./lib