Offline Library Embedding

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1. Run embed script to download and uncompress library released to each of platforms, then encode and compress again, but this time save in .json files instead of .zip

deno run --allow-all --unstable embed.ts

2. When compiled binary imports WebUI

const myWindow = new WebUI();

it already has all of libs compressed

import libs from './dir.ts';

and depending on user platform, it will uncompress and save that one into user home directory,

  const it = libs[Deno.build.os];
  const xit = `webui-2.${it.ext}`;
  const ixit = joinPath(Deno.env.get('HOME'), '.webui', xit);
  // ...
  export const libName = await getLibName();

and access it given that path

import {
  libName,
} from "../deps.ts";

export function loadLib() {
  return Deno.dlopen(
    libName,

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Possible improvement:

If we want to avoid embedding all libs when only one needed compiling for each platform and further save space, then we can have WebUI to accept compressed library imported as an argument and let user to create several main files for each platform, but I'm not sure if it would be worth it like this:

import webuiMacosArm from "./src/webui-libs/webui-arm64.dylib_.json" with { type: "json" };

const myWindow = new WebUI(webuiMacosArm);

I think it's better as implemented in current PR:

const myWindow = new WebUI();

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Does it make sense? @hassandraga