Add Custom Filters

[B0ney]

While XMODITS is designed for bulk extraction, it would be convenient to specify what kind of files it should rip.

Internally, if "Strict Loading" is checked, then it will only allow files with the supported extensions:

• it
• xm
• s3m
• mod
• umx
• mptm

With custom filtering, it will be possible for the end user to finely tune these values.

Additionally, there will also be more properties to filter by:

• Size - Only allow files if their binary size fits within a particular range, or if they go below/exceed a threshold.
• Date - Only allow files if their date of creation (or modification) lies within a specified range, or it was created before/after a date.

When filtering by filename, these properties will suffice:

• starts with
• ends with
• contains

Though, adding regex support can improve flexibility.