Release luneo Markers to CUE sheet and chapter tags v2.0

[luneooo]

-- v2.0:
-- Add album, artist, genre, date and title tags to FFMETADATA output
-- v1.9:
-- Add support for FFMETADATA format
-- v1.8:
-- Add support for opus files (via opustags)
-- v1.7:
-- Update changelog
-- v1.6:
-- Add dialog field for metaflac path
-- Add none option for output to only embed chapter data into flac file
-- v1.5:
-- Album defaults to the project title, artist to the project author
-- v1.4:
-- Add changelog info
-- v1.3:
-- Settings dialog now also asks for Album, Artist, Date and Genre
-- Album defaults to the project title, artist to the project author
-- Added y/n switches for embedding tags and for the native CUESHEET block
-- v1.2:
-- Embedding writes ALBUM, ARTIST, ALBUMARTIST, TITLE, DATE and GENRE
-- Output location can be picked as a file or as a folder
-- Added CONFIG.METAFLAC for an absolute path when REAPER cannot find it
-- v1.1:
-- metaflac errors are shown in the console instead of a bare exit code
-- Chapter tags are read back after embedding to confirm they were written
-- Warn that the native CUESHEET block hides chapter titles in mpv and VLC
-- Fixed cancelling the save dialog falling through to the default path
-- v1.0:
-- Initial release