feat: Add initial deployment setup for OTSSignsOrchestrator

- Create index.html for the web application interface.
- Implement deploy.sh script for building and deploying the application to a Docker Swarm manager.
- Add docker-compose.yml for defining application and PostgreSQL service configurations.

.dockerignore

@@ -0,0 +1,42 @@
+# .NET build artifacts
+**/bin/
+**/obj/
+
+# Node / frontend
+**/node_modules/
+OTSSignsOrchestrator/ClientApp/dist/
+
+# Built frontend (generated by Vite into wwwroot — included via Docker COPY from frontend-build stage)
+OTSSignsOrchestrator/wwwroot/
+
+# Test project
+OTSSignsOrchestrator.Tests/
+
+# Logs
+logs/
+*.log
+
+# User-specific files
+.vs/
+.vscode/
+*.user
+*.suo
+
+# Secrets / local config overrides (never bake these into the image)
+appsettings.Development.json
+**/secrets.json
+
+# Git
+.git/
+.gitignore
+
+# Docker
+Dockerfile
+.dockerignore
+docker-compose*.yml
+
+# Misc
+README.md
+CLAUDE.md
+.github/
+templates/