Module uploader is poorly documented

[alexslavr]

Usage on the client-side is not documented at all.

API handlers description is wrong:

e.g. getFormUpload endpoint returns not an upload path, but the object

form: {
   fields: {}
   url: "http://localhost:3000/uploader?dir=images&uploadId=c5c61b58-b6d4-4ce0-8ea8-ccbab3151045"
   uploadId: "c5c61b58-b6d4-4ce0-8ea8-ccbab3151045"
}

It's unclear how to use form.fields

TS typings are also useless: