Harmonize Title-Parsing of Movies and TV-Series

[rcrdnalor]

MythTV parses filenames of movies and series according
the scheme defined in
https://www.mythtv.org/wiki/MythVideo_File_Parsing

For tv-series, it is allowed to add the year in the title,
like The Forsyte Saga (1967) or The Forsyte Saga (2002),
e.g.: The Forsyte Saga (1967) 1x01 A Family Festival.mkv
is correctly parsed.
This may help the television grabber of MythTV to find the
correct entry.

In contrast, all kind of braces are removed from the filename
when parsing video titles:
Ocean's Eleven (2001).mp4 becomes Ocean's Eleven 2001
according the filename convention on the wiki.
This confuses the movie grabber of MythTV because it
cannot distinguish whether the year is part of the
title or it is the year of the release. For exact this reason,
grabbing for titles ending with a year is not implemented in
the movie grabber tmdb3.py.
Popular examples for different movies with year in the title:
Wonder Woman vs. Wonder Woman 1984
Blues Brothers vs. Blues Brothers 2000.

Proposed solution:
Allow parenthesis when parsing filenames of video titles
containing a year in curved braces at the end of the title.
It enables MythTV's movie grabber to extract the release year
from the parsed filename and do a search for title with year.