Add support for type and user_id queries on get_subscriptions

[PredaaA]

This PR adds support for type and user_id queries to EventSub get_subscriptions. https://dev.twitch.tv/docs/api/reference/#get-eventsub-subscriptions

Checklist

• [x] If code changes were made then they have been tested.
  • [ ] I have updated the documentation to reflect the changes.
  • [x] I have updated the changelog with a quick recap of my changes.
• [ ] This PR fixes an issue.
• [x] This PR adds something new (e.g. new method or parameters).
• [ ] This PR is a breaking change (e.g. methods or parameters removed/renamed)
• [ ] This PR is not a code change (e.g. documentation, README, ...)

[chillymosh]

Just to note, the filters are mutually exclusive so if more than one are sent it will probably fail with a 400 error.

The typings should probably be Optional since they are set to None and are also not required.

I'll let @IAmTomahawkx confirm this as he worked on Eventsub.

[PredaaA]

Just pushed requested changes.

[IAmTomahawkx]

@PredaaA can you fix the merge conflicts so i can merge this? thanks!

[PredaaA]

Yup, done!