feat: mpdstats: adds config option for remaining time threshold to determine if track was played.

[5061726b6572]

Description

Add new configuration option, maximum_remaining_seconds_allowed_for_track_to_be_considered_played, to allow configuring the maximum number of seconds remaining of a track for it to be counted as played instead of skipped.

To Do

• [x] Documentation.
• [x] Changelog.
• [x] Tests.