Fix bugs from integration tests

[Callum027]

• Add missing py.typed file
• Add mutual exclusion handling for the category and directory attributes for Transmission download clients
• Rename the indexer_priority attribute on indexers to priority (with an alias available for backwards compatibility)
• Remove the anime_standard_format_search attribute from the common indexer interface, and add it to the specific indexer types that implement it
• Fix a large number of indexer parsing bugs
  • Torznab indexers are now confirmed to load correctly from remote Sonarr instances (by testing the Torznab indexer Prowlarr creates)
• Fix updating delay profiles on brand new Sonarr installations
• Fix updating Media Management naming configuration
• Fix an issue where UI settings updating was not idempotent