add flutter example app test

client/flutter_ui/tool/bootstrap.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+project_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+tmp_dir="$(mktemp -d)"
+
+cleanup() {
+  rm -rf "$tmp_dir"
+}
+trap cleanup EXIT
+
+command -v flutter >/dev/null 2>&1 || {
+  echo "flutter is not installed"
+  exit 1
+}
+
+cp "$project_dir/pubspec.yaml" "$tmp_dir/pubspec.yaml"
+cp "$project_dir/analysis_options.yaml" "$tmp_dir/analysis_options.yaml"
+cp -R "$project_dir/lib" "$tmp_dir/lib"
+cp -R "$project_dir/test" "$tmp_dir/test"
+
+flutter create \
+  --platforms=windows,macos,linux \
+  --project-name=netbird_flutter_ui \
+  --org=io.netbird \
+  "$project_dir"
+
+cp "$tmp_dir/pubspec.yaml" "$project_dir/pubspec.yaml"
+cp "$tmp_dir/analysis_options.yaml" "$project_dir/analysis_options.yaml"
+rm -rf "$project_dir/lib"
+cp -R "$tmp_dir/lib" "$project_dir/lib"
+rm -rf "$project_dir/test"
+cp -R "$tmp_dir/test" "$project_dir/test"
+
+cd "$project_dir"
+flutter pub get