Add initial project structure with backend and frontend setup

- Created backend structure with Go, including main application logic and API endpoints.
- Added Docker support for both development and production environments.
- Introduced frontend using Nuxt 3 with Tailwind CSS for styling.
- Included configuration files for Docker and environment variables.
- Established basic documentation for contributing, development, and deployment processes.
- Set up .gitignore and .dockerignore files to manage ignored files in the repository.

.dockerignore

@@ -0,0 +1,24 @@
+# Git and IDE
+.git
+.gitignore
+.cursor
+.cursorignore
+*.md
+*.plan.md
+
+# Old Vue 2 frontend (not used in build)
+frontend/node_modules
+frontend/dist
+
+# Nuxt (built in frontendbuilder stage)
+frontend-nuxt/node_modules
+frontend-nuxt/.nuxt
+frontend-nuxt/.output
+
+# Runtime data (mounted at run time, not needed for build)
+grids
+
+# Misc
+*.log
+.env*
+.DS_Store