feat: encode added routes

[huseeiin]

now you can add h3 routes with arabic letters.

[huseeiin]

@pi0 you might need to rerun prettier because i didn't have time to do that

[pi0]

We should probably do manual encoding (or do it behind a flag) since URL constructor adds runtime overhead

[pi0]

(from chat)

const preservedChars = [
  "%",
  "[",
  "]",
  "!",
  "*",
  "'",
  "(",
  ")",
  ";",
  ":",
  "@",
  "&",
  "=",
  "+",
  "$",
  ",",
  "/",
  "?",
  "#",
  "-",
];

/**
 * Transform the `pathname` segment of a URL like the browser does.
 */
export function sanitizePathname(url: string) {
  url = String(url);

  const segments = url.replace(/\\/g, "/").split("/");

  const normalizedSegments: string[] = [];

  for (const segment of segments) {
    if (segment === "") {
      continue;
    }

    if (segment === ".") {
      continue;
    }

    if (segment === "..") {
      if (normalizedSegments.length > 0) {
        normalizedSegments.pop();
      }
    } else {
      normalizedSegments.push(segment);
    }
  }

  const result = normalizedSegments
    .join("/")
    .split("")
    .map((char) =>
      preservedChars.includes(char) ? char : encodeURIComponent(char)
    )
    .join("");

  return result.startsWith("/") ? result : `/${result}`;
}