Add "Custom" label to Dates in a contact entry

[deeeseee]

Checklist

• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one feature request.
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Feature description

When adding a phone number to a contact, it has numerous labels (like Mobile, Home, Other, Custom, etc.). When adding an address to a contact, it also has labels like Home, Work, Other & Custom. However, when adding dates to a contact, there is only Anniversary, Birthday and Other.

Would it be possible to add a label called "Custom" when adding new dates to a contact?

(Since the feature already exists for Phone numbers and Addresses, I hope it's not too much trouble to add that feature to Dates as well.)

Thank you for maintaining and improving these apps!

Why do you want this feature?

This feature would allow us to add custom major life events/milestones, if desired, such as "First job", "Date we met", or even "Death".

Additional information

No response

[bege10]

I second this request since the AOSP contacts app has this feature and my calendar app shows different icons for different dates, e.g. date of death.