Major Changes

Added docker container to Unraid Community Apps store
Added ability to create season posters automatically (and manually)
- Looks for season poster creation in YAML of the format:
```
season_posters:
  create: true
  titles:
    1: some season title
  font:
    file: ./path/to/some/file.ex
    color: "#hex"
```
- Looks for base images titled season{number}.jpg, such as season1.jpg in the source directory
- Example of a created poster:
- Added mini maker arguments
  - --season-poster, --season-text, --season-font, --season-font-color, --season-font-size, --season-font-kerning
Automatically download logos for all series
- Independent of archive functionality, logos are downloaded so that they can be used by the LogoTitleCard (and other cards) without having to be run twice
- Move SVG to PNG image conversion from ShowSummary class to ImageMaker
Removed ability to set global custom logo filename

Major Fixes

N/A

Removed dependence on StandardTitleCard from ShowSummary
Generalized all ShowArchive functionality
- Delete all "hard-coded" function definitions and replaced them with __getattr__() wrapper so any function can easily be passed to all Show objects
Consolidated directory creation
- Removed from various classes and moved into PreferenceParser object initialization
- Removed output parent directory creation from the abstract CardType.create() method into the TitleCard.create() wrapper (less error prone)
Change EpisodeMap.get_generic_season_title() method to take either season number or EpisodeInfo object
Pass episode indices (i.e. season_number, episode_number, and abs_number) to title card object creation
Rework EpisodeInfo class into dataclass

N/A