feat(search): allow date and recipient search

[JohannesGGE]

Fix: #8864
Server PR: nextcloud/server#40618

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Currently it's either possible to provide email: (will be mapped from person) or from:/to:/cc:/bcc:. email will search in all fields (or), from/to/cc/bcc in the explicit field (and). If both filter types are provided email will be used.

How to test

curl -u admin:admin https://localhost/ocs/v2.php/search/providers/mail/search?term=spam&person=nc-user_admin

Open Questions:

• What does the person filter provide exactly? An IUser

ToDos:

• Get email addresses for person (depends on what person provide

Follow-ups

• Is it possible to refactor \OCA\Mail\Db\MessageMapper::findIdsByQuery and \OCA\Mail\Db\MessageMapper::findIdsGloballyByQuery?
• There is a bug introduced in https://github.com/nextcloud/mail/pull/8897/files#diff-39657503b9cdd0f0fa8292196e6432d8a918b4d16ab8212f2a5c9b6f67857e86 . If just term is provided the result is wrong (All emails because no filter. But should be parsed as subject:term) -> Issue: Unified-Search broken when searching for term #9043

[ChristophWurst]

I think the API is implemented correctly. Can't test it right now because searching for since:1699474523 doens't end up in Mail's search provider. Neither does in:mail since:1699474523 🤷

[st3iny]

Tested and works.

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