chore: Prepare for multi configuration and cleanup

nix/programs/ncspot.nix

@@ -1,40 +0,0 @@
-{
-  xdg.configFile."ncspot/config.toml" = {
-    text = ''
-      notify = true
-      shuffle = true
-      cover_max_scale = 2
-      audio_cache_size = 50000
-      initial_screen = "library"
-      library_tabs = ["playlists"]
-      [theme]
-      background = "#1a1b26"
-      primary = "#c0caf5"
-      secondary = "#1a1b26"
-      title = "#e0af68"
-      playing = "#7dcfff"
-      playing_selected = "#73daca"
-      playing_bg = "#1a1b26"
-      highlight = "#73daca"
-      highlight_bg = "#1a1b26"
-      error = "#c0caf5"
-      error_bg = "#f7768e"
-      statusbar = "#24283b"
-      statusbar_progress = "#73daca"
-      statusbar_bg = "#7dcfff"
-
-      cmdline_bg = "#24283b"
-      search_match = "#bb9af7"
-
-      [keybindings]
-      "j" = "move left 1"
-      "k" = "move down 1"
-      "l" = "move up 1"
-      ";" = "move right 1"
-
-      [notification_format]
-      title = "%artists"
-      body = "%title"
-    '';
-  };
-}