feat: make author clickable

lib/string.ts

@@ -104,3 +104,15 @@ export const isLocalImage = (src: string) =>
 export const isString = (input: string | undefined): input is string => {
   return typeof input === "string";
 };
+
+function componentToHex(c: number) {
+  if (c <= 1) {
+    c = Math.round(c * 255);
+  }
+  const hex = c.toString(16);
+  return hex.length == 1 ? "0" + hex : hex;
+}
+
+export function rgbToHex(r: number, g: number, b: number) {
+  return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
+}