feat(compile): ability to embed directory in executable

[dsherret]

deno compile --allow-read=data --include data --output main main.js

// main.js
const dataDir = import.meta.dirname + "/data";
const fileNames = Deno.readDirSync(dataDir).map((entry) => dataDir + "/" + entry.name);

for (const fileName of fileNames) {
  console.log("Reading", fileName);
  console.log(Deno.readTextFileSync(fileName));
}

Ref #20885