add greeting and datetime info widgets

src/components/widgets/greeting/greeting.jsx

@@ -0,0 +1,22 @@
+const textSizes = {
+  "4xl": "text-4xl",
+  "3xl": "text-3xl",
+  "2xl": "text-2xl",
+  xl: "text-xl",
+  lg: "text-lg",
+  md: "text-md",
+  sm: "text-sm",
+  xs: "text-xs",
+};
+
+export default function Greeting({ options }) {
+  if (options.text) {
+    return (
+      <div className="flex flex-row items-center justify-start">
+        <span className={`text-theme-800 dark:text-theme-200 ${textSizes[options.text_size || "xl"]}`}>
+          {options.text}
+        </span>
+      </div>
+    );
+  }
+}