Resolve "Add Personal Access Token (PAT)"

Closes #2456 (closed)

• follow up MR: list support filter parameters

---

gitlab implementation for my reference:

• Personal access tokens API: https://docs.gitlab.com/api/personal_access_tokens/
• PAT datamodel: https://gitlab.com/gitlab-org/gitlab/-/blob/master/db/structure.sql?ref_type=heads
• GitLab token overview: https://docs.gitlab.com/security/tokens/

CREATE TABLE personal_access_tokens (
    id bigint NOT NULL,
    user_id bigint NOT NULL,
    name character varying NOT NULL,
    revoked boolean DEFAULT false,
    expires_at date,
    created_at timestamp without time zone NOT NULL,
    updated_at timestamp without time zone NOT NULL,
    scopes character varying DEFAULT '--- []
'::character varying NOT NULL,
    impersonation boolean DEFAULT false NOT NULL,
    token_digest character varying,
    expire_notification_delivered boolean DEFAULT false NOT NULL,
    last_used_at timestamp with time zone,
    after_expiry_notification_delivered boolean DEFAULT false NOT NULL,
    previous_personal_access_token_id bigint,
    organization_id bigint NOT NULL,
    seven_days_notification_sent_at timestamp with time zone,
    thirty_days_notification_sent_at timestamp with time zone,
    sixty_days_notification_sent_at timestamp with time zone,
    description text,
    group_id bigint,
    user_type smallint,
    granular boolean DEFAULT false NOT NULL,
    CONSTRAINT check_6d2ddc9355 CHECK ((char_length(description) <= 255))
);