Search Improvements

[blacktwin]

Description

Improving the functionality of librar.search() to work more inline with Plex's webUI.
Searching now allows the libtype.category searching found in libraries that have grandparent, parent, and child structures.
Searching now allows for the use of operators (>>, <<, !, <, >)

Addresses issues #392, #320, #595

Newly supported searches:

plex.library.section('Movies').search(**{'genre':'Romance'})
plex.library.section('Movies').search(**{'genre!':'Romance'})
plex.library.section('Movies').search(**{'year>>':'2000'})
plex.library.section('Movies').search(**{'year<<':'2000'})
plex.library.section('TV Shows').search(**{'show.year<<':'2000'})
plex.library.section('TV Shows').search(**{'episode.year<<':'2000'})

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the docstring for new or existing methods
• I have added tests when applicable

[blacktwin]

Draft until I can add some tests. Tests should include comparing library searching against inverse searching found in #595.

[blacktwin]

Just some examples of what will work now with the current state of this PR:

library = plex.library.section('TV Shows')
library.search(unwatchedLeaves=True)                     # resolves to search show.unwatchedLeaves
library.searchShows(unwatched=True)                      # resolves to search episode.unwatched
library.search(unwatched=True)                           # resolves to search episode.unwatched
library.search(**{'episode.unwatchedLeaves':True})       # resolves to episode.unwatchedLeaves and errors as this pairing does not exist

[meisnate12]

any update to when this might get finished? Not trying to rush you just got curious when i saw it still wasn't in the latest release