owner of the repo
name of the repo
CreateMilestoneOption options for creating a milestone
Description provides details about the milestone
Deadline is the due date for the milestone
State indicates the initial state of the milestone
Title is the title of the new milestone
Milestone
Milestone milestone is a collection of issues on one repository
ClosedIssues is the number of closed issues in this milestone
ID is the unique identifier for the milestone
OpenIssues is the number of open issues in this milestone
State indicates if the milestone is open or closed
Title is the title of the milestone