feat: Implement frontend asset build process and update Docker configuration

- Added a new build script using esbuild to bundle JavaScript and CSS assets, including Tailwind CSS and Font Awesome.
- Updated the Dockerfile to include a multi-stage build process for frontend assets, ensuring efficient image creation.
- Enhanced GitHub workflows to automate the installation of Node.js dependencies and build frontend assets during CI/CD.
- Introduced a .gitignore entry for the dist directory to prevent unnecessary files from being tracked.
- Improved caching and content type handling for static files served by the application.

tailwind.config.js

@@ -0,0 +1,33 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: [
+    "./components/**/*.{html,js,templ,go}",
+    "./node_modules/flowbite/**/*.js"
+  ],
+  darkMode: 'class',
+  theme: {
+    extend: {
+      colors: {
+        primary: {
+          50: '#f0f9ff',
+          100: '#e0f2fe',
+          200: '#bae6fd',
+          300: '#7dd3fc',
+          400: '#38bdf8',
+          500: '#0ea5e9',
+          600: '#0284c7',
+          700: '#0369a1',
+          800: '#075985',
+          900: '#0c4a6e',
+          950: '#082f49',
+        }
+      },
+      fontFamily: {
+        sans: ['Inter var', 'ui-sans-serif', 'system-ui', '-apple-system', 'BlinkMacSystemFont', 'Segoe UI', 'Roboto', 'Helvetica Neue', 'Arial', 'sans-serif'],
+      }
+    }
+  },
+  plugins: [
+    require('flowbite/plugin')
+  ],
+}