All the types and response formats to the client for the schedule side

scheduleTypes.ts

interface UserDetails {
  uid: string;
  username: string;
  displayName: string;
}

interface MinAgendaItem {
  id: string;
  name: string;
}

interface ScheduleReminder {
  id: string;
  minutes: number;
}

interface CommitHash {
  hash: string;
  Timestamp: string;
}

interface UserComment {
  user: UserDetails;
  content: string;
}

interface ScheduleUpdate {
  id: string;
  date: string;
  time: string;
  type: "info" | "reminder" | "critical";
  content: string;
  comments: UserComment[];
}

interface SchedulePeriod {
  id: string;
  start_time: string;
  end_time: string;
  day: number;
  date: string;
  type: "one-time" | "weekly" | "monthly";
  location: string;
  campus_id: string;
  location_id: string;
  onsite: boolean;
}

// Types for schedule items
export interface TimetableItem {
  id: string;
  uid: string;
  author: string;
  visibility: "public" | "private";
  description: string;
  cover_pic: string;
  tag: string;
  name: string;
  modified: string;
  agendas: string[];
  updates: ScheduleUpdate[];
  username: string;
  created: string;
  commit_hash: CommitHash;
  collaborators: UserDetails[];
  invited: UserDetails[];
  unjoined_agendas: MinAgendaItem[];
}

export interface AgendaItem {
  id: string;
  uid: string;
  visibility: "public" | "private";
  name: string;
  code: string;
  description: string;
  cover_pic: string;
  periods: SchedulePeriod[];
  updates: ScheduleUpdate[];
  tag: string;
  author: string;
  username: string;
  created: string;
  commit_hash: CommitHash;
  collaborators: UserDetails[];
  invited: UserDetails[];
}

export interface UserTimetableItem {
  id: string;
  is_muted: boolean;
  muted_agendas: string[];
  custom_update_reminders: ScheduleReminder[];
  custom_cover_pic: string;
  commit_hash: CommitHash;
}

export interface UserAgendaItem {
  id: string;
  is_muted: string;
  muted_periods: string;
  color: number;
  custom_update_reminders: ScheduleReminder[];
  custom_period_reminders: ScheduleReminder[];
  custom_cover_pic: string;
  commit_hash: CommitHash;
}

export interface ScheduleResponse {
  success: boolean;
  message: {
    joined_agendas: UserAgendaItem[];
    joined_timetables: UserTimetableItem[];
    owned_timetables: UserTimetableItem[];
    owned_agendas: UserAgendaItem[];
    timetables: TimetableItem[];
    agendas: AgendaItem[];
  };
}

done, review and merge PR