Add the ability to import and export information about file tags

Text import and export will only have the ability to import or export tags for a single image.
Text export will simply export the tags of a single file with each tag on a newline (\n).
Text Import must have the ability to import from multiple formats such as a previously discussed format and others such as lists copied and pasted from a web page (booru's and the like).

Database import and export is a much easier method as it will use an SQLite database and simply INSERT and SELECT from it and due to this it will be able to support importing and exporting tags for multiple files, some syncing feature should be implemented to account for this.

ListViewItems flicker a single time after hovering over them for the first time after the form is loaded

There will likely be problems with people using dark Windows themes and having a mix of SystemColors and static colours.

Clean ListViewExtended gets choked up on performing lots of calculations when the control has a large amount of items, need to store the selection gradient somewhere and possibly have a cache for when a large amount of colour changes is taking place.

Format dependent file engraving