feat: Initialize NxMesh project with Docker, Nginx, PostgreSQL, and Rust backend

- Add Docker Compose configuration for development environment
- Create Nginx configuration files for routing and health checks
- Set up PostgreSQL database with health checks
- Add .dockerignore and .gitignore files to exclude unnecessary files
- Initialize Cargo.toml and Cargo.lock for Rust dependencies
- Include GNU General Public License for project
- Add README.md for project description
- Create Justfile for development workflow commands

.devcontainer/devcontainer.json

@@ -0,0 +1,80 @@
+{
+  "name": "NxMesh Dev Environment",
+  "dockerComposeFile": "docker-compose.yml",
+  "service": "app",
+  "workspaceFolder": "/workspace",
+
+  "features": {
+    "ghcr.io/devcontainers/features/docker-in-docker:2": {
+      "version": "latest",
+      "enableNonRootDocker": "true",
+      "moby": "true"
+    },
+    "ghcr.io/devcontainers/features/common-utils:2": {
+      "installZsh": "true",
+      "username": "vscode",
+      "userUid": "1000",
+      "userGid": "1000",
+      "upgradePackages": "true"
+    },
+    "ghcr.io/devcontainers/features/rust:1": {
+      "version": "stable",
+      "profile": "default",
+      "cargoHome": "/usr/local/cargo"
+    },
+    "ghcr.io/devcontainers/features/node:1": {
+      "version": "lts",
+      "nodeGypDependencies": true,
+      "nvmInstallPath": "/usr/local/share/nvm"
+    },
+    "ghcr.io/guiyomh/features/just:0": {},
+    "ghcr.io/devcontainers-extra/features/bun": {
+      "version": "latest"
+    }
+  },
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "rust-lang.rust-analyzer",
+        "vadimcn.vscode-lldb",
+        "bradlc.vscode-tailwindcss",
+        "esbenp.prettier-vscode",
+        "dbaeumer.vscode-eslint",
+        "ms-azuretools.vscode-docker",
+        "nefrob.vscode-just-syntax"
+      ],
+      "settings": {
+        "rust-analyzer.cargo.features": "all",
+        // both clippy and fmt
+        "rust-analyzer.checkOnSave.command": "clippy"
+      }
+    }
+  },
+
+  "forwardPorts": [3000, 8080, 5432, 80, 443],
+  "portsAttributes": {
+    "3000": {
+      "label": "Vite Dev Server",
+      "onAutoForward": "notify"
+    },
+    "8080": {
+      "label": "Rust Backend API",
+      "onAutoForward": "notify"
+    },
+    "5432": {
+      "label": "PostgreSQL",
+      "onAutoForward": "silent"
+    },
+    "80": {
+      "label": "Nginx",
+      "onAutoForward": "notify"
+    }
+  },
+
+  "postCreateCommand": "just setup",
+  "postStartCommand": "just start-services",
+
+  "remoteUser": "vscode",
+  "updateRemoteUserUID": true
+}