Clean ComicInfo.xml

Requested by a user on Discord, this feature will let you bulk update specific items in the ComicInfo.xml of each CBZ file in a directory.

Currently it supports two fields and will only work on the selected directory (no traversing sub-directories).

Both options need to be enabled in the Settings section of the app.

1. Update Volume: This will update Volume all files in the selected directory using the (YEAR) obtained from the first file in the directory. If a 4-digit YEAR in parentheses is not available, no updates will be made.
2. Clean Comments: This feature will REMOVE content from the Comments field each file of the selected sub-directory. There are two options available for cleaning comments.
3. Remove any content that starts with *List until the next paragraph/blank line. This specifically targets List of covers and their creators: and the table data that follows
4. Remove all content that is ## Header, Bold or in a | Table |

To Do: Add Examples