🏷️ Feature / Typescript typings

[bitbreakr]

Related to Trello/Jira card

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What is the purpose of this PR?

This PR's purpose is about making the library Typescript & IntelliSense code completion compatible

What was my development approach? Any special points of attention?

Fixes the following:

• Could not find a declaration file for module 'posthog-node' error
• Continous delivery job error when using 'posthog-node'

I did some checks before submitting my PR...

• [x] I correctly wrote my commits, ideally one commit per significant code change
• [x] I reviewed my own code before submitting this PR
• [] I wrote non-regression & unit tests

[mariusandra]

Awesome, thanks @bitbreakr !

[bitbreakr]

@mariusandra Thank you very much. Have a good evening 👍

[mariusandra]

I see I don't have access to push out a new release on npm. This will be sorted out soon!