Feature: Add ignore_ids support

[glensc]

To workaround for problems like:

• sync fails for movies that were released in the 1950s, 1960s, or 1970s #1873
• plextraktsync terminated by API didn't respond properly #2025

# Plex Ids to ignore
# This is to workaround of broken sync if some items have unrecoverable errors
ignore_ids:
  - 111745

[glensc]

this should be in servers.yml as id is server specific