Tags System

[skymory-24]

• Added tags system adds system to allow for multiple tags to be assigned to characters and allows for characters to be searched via tags

tags are stored as a list-like string in a new column in the database (existing databases are automagically updated to have the tags column)

• Added Commands add-tag: adds a tag to an existing character del-tag: deletes a tag from an existing character tags: searches characters via tags authors: searches characters via author ID

Updated view command to show tags when displaying a character

New code has been tested, but I recommend making a backup of any databases if possible just in case