[Feature] Create aired month, year and day keys

[webepg]

Describe the feature that you'd like

It would be great if you could create a field for day, month and year by splitting up the firstaired field

Why is this feature needed? What problem does it solve?

Some TVShows or addons do organize their seasons by release year and month (especially daily soaps). The episodename is sometimes also year month and day but in different orders.

Steps to reproduce.

No response

Screenshots and Additional Info

No response

Checklist

• I have searched the issues and this feature has not been requested.
• I have updated TMDbHelper to the most recent version.