export for deno

we ship our source typescript, and the comiled javascript along with typehints.

lets also make this package work with deno's native typescxript support

example package.json
```json
{
"name": "my-hybrid-package",
"version": "1.0.0",
"type": "module",
"main": "./dist/index.js",
"types": "./dist/index.d.ts",
"exports": {
".": {
"deno": "./src/index.ts",
"types": "./dist/index.d.ts",
"import": "./dist/index.js",
"require": "./dist/index.cjs"
}
}
}
```