chore: dep pkg upgrade

- Updated Node version in Dockerfile and .npmrc.
- Upgraded various dependencies in package.json, including react-dropzone, react-router, and eslint.
- Added pnpm-workspace.yaml for workspace management.
- Adjusted TypeScript configurations and test utilities for compatibility.
- Enhanced documentation for installation instructions and TypeScript toolchain.

support/b64-loader.ts

@@ -3,7 +3,7 @@ import { Plugin } from 'vite';
 
 export const base64Loader: Plugin = {
   name: 'base64-loader',
-  async transform(_: unknown, id: string) {
+  async load(id: string) {
     const [path, query] = id.split('?');
     if (query != 'base64') return null;