Trusted list

[egregors]

Now we have an admin and non-admin users in the chat. I'd like to add one more level. Let's introduce Trusted level.
The idea is pretty clear:

• add trusted collection into DB (who trusted, trusted by whom, when trusted);

[
    {
        "userId": 1234567890,
        "trustedBy": 1234,
        "trustedAt": "2022-22-02 10:20"
    }
]

• add commands to trust and untrust for admin (maybe cmd to check is the particular user trusted);
• put or delete trusted users into \ from DB by commands above, (admins are trusted by default);

Why? To allow some non-admins to run some flood dangerous commands, for example #243
And this badge could be a pleasure for active chat members who are not win a AoC yet ;)

For example:

Alice: /cancel
Nyan: *ignore*

admin: /trust @Alice
Nyan: Alice is trused now!

Alice: /cancel
Nyan: *start a Poll*

admin: /untrust @Alice
Nyan: @Alice did not justify the trust...

admin: /trust? @Alice
Nyan: nop

I see all this stuff like a part of core functionality.