Feat/add schedules

[IamKirbki]

Add Scheduled Tasks Endpoints

Summary

• Added new scheduled endpoints for users and organizations
• Refactored resources into organized folder structure
• Changed API to nest schedule under user/organization

New API Structure

lunogram.user.upsert()
lunogram.user.delete()
lunogram.user.postEvents()
lunogram.user.schedule.create()
lunogram.user.schedule.delete()

lunogram.organization.upsert()
lunogram.organization.delete()
lunogram.organization.addUser()
lunogram.organization.removeUser()
lunogram.organization.postEvents()
lunogram.organization.schedule.create()
lunogram.organization.schedule.delete()

New Types

• CreateUserScheduledRequest / CreateOrganizationScheduledRequest
• DeleteUserScheduledRequest / DeleteOrganizationScheduledRequest
• UserScheduledResponse / OrganizationScheduledResponse

Structure Changes

• Restructured src/core/resources/ into users/ and organizations/ subdirectories
• Added src/types/scheduled.ts for scheduled-related types
• UserScheduledResource and OrganizationScheduledResource kept in separate files

[jeroenrinzema]

I like this but would propose to structure the sdk a bit differently:

lunogram.user.post()
lunogram.user.schedule.post()
lunogram.organization.schedule.post()