Add comment_close_date and other columns to database

[hcaofec]

What we’re after

We need to add the comment_close_date, admin_close_date, and is_open_comment_flag columns to the fosers.documents table. These columns will be used to determine whether a specific document is eligible for public comment.

Related ticket(s)

• #6478

Action item(s)

• Add migration file

Completion criteria

• Columns are added to the table and view