resolve issue with missing vite-plugin-node-polyfills

add LibreJS licenses to all demo JS
split browser build from node build
add copyright info to license files
update to use yarn v4.13.0
update to v0.9.2

dist-demo/dist-browser/browser.d.ts

@@ -0,0 +1,5 @@
+export type * from './types.ts';
+export { default as hashTwt } from './hashTwt.ts';
+export { default as loadAndParseTwtxtFile } from './loadAndParseTwtxt.ts';
+export { default as parseTwtxt } from './parseTwtxt.ts';
+export { base32Encode } from './utils.ts';