fix: test failed

a test case that was listening to an event that was dispatched after a timeout failed. Changed the test case to await the resolve of the `pull` method

add listeners / getListeners method

change type of standard event record: `any` instead of `unknown`

update to allow use without types

auto run `deno fmt ${file}` on save

make `emit` async and add emitSync method

- `emit` now waits for every listener to return and you can use it with `await`
- You can use `emitSync` to avoid waiting for each listener to return

fix and extend EventEmitter class

- fix once method
- add publish / subscribe methods

format and lint

move EventEmitter to EventEmitter.ts and add tests