feat: add useEmitter and corresponding viz api

[Caele]

Motivation

Adds new useEmitter hook to enable charts to affect mashups and client.

Requirements checklist

• Api specification
  • Ran yarn spec
    • No changes OR API changes has been formally approved
• Unit/Component test coverage
• Correct PR title for the changes (fix, chore, feat)

When build and tests have passed:

• Add code reviewers, for example @qlik-oss/nebula-core

[T-Wizard]

consider if we want to expose a bit more then just on and off to the mashup
ex: once, removeAllListeners, setMaxListeners
but that could be done later when we see a need for it

[Caele]

consider if we want to expose a bit more then just on and off to the mashup ex: once, removeAllListeners, setMaxListeners but that could be done later when we see a need for it

yea, keeping this experimental for now, so just adding bare minimum