feat: add Emerald theme

modules/blox-tailwind/assets/css/themes/emerald.css

@@ -0,0 +1,14 @@
+/* Hugo Blox color theme: EMERALD */
+:root {
+  --color-primary-50: 236 253 245;
+  --color-primary-100: 209 250 229;
+  --color-primary-200: 167 243 208;
+  --color-primary-300: 110 231 183;
+  --color-primary-400: 52 211 153;
+  --color-primary-500: 16 185 129;
+  --color-primary-600: 5 150 105;
+  --color-primary-700: 4 120 87;
+  --color-primary-800: 6 95 70;
+  --color-primary-900: 6 78 59;
+  --color-primary-950: 2 44 34;
+}