chore: establish travel planner pnpm workspace

.env.example

@@ -0,0 +1,15 @@
+APP_HTTPS_PORT=443
+IMAGE_TAG=local
+REGISTRY=local
+POSTGRES_IMAGE_TAG=18.4-alpine
+REDIS_IMAGE_TAG=8.8.1-alpine
+POSTGRES_DB=travel_planner
+POSTGRES_USER=travel_planner
+POSTGRES_PASSWORD=change-me-outside-source-control
+DATABASE_URL=postgresql://travel_planner:change-me-outside-source-control@postgres:5432/travel_planner
+REDIS_URL=redis://redis:6379
+APP_VERSION=dev
+TEAMCITY_BUILD_NUMBER=local
+SOURCE_REVISION=local
+TLS_CERT_FILE=/etc/travel-planner/tls/tls.crt
+TLS_KEY_FILE=/etc/travel-planner/tls/tls.key