feat: add audio support (#81)

Author: icco

README.md

@@ -52,7 +52,7 @@ Usage:
   etu [command]
 
 Available Commands:
-  create      Create a new journal entry (attach images via drag & drop in TUI or -i/--image).
+  create      Create a new journal entry (attach images/audio via drag & drop in TUI or -i/--image, -a/--audio).
   delete      Delete a journal entry.
   help        Help about any command
   last        Output a string of time since last post.

main.go

@@ -51,7 +51,7 @@ var (
 	createCmd = &cobra.Command{
 		Use:     "create",
 		Aliases: []string{"c", "new"},
-		Short:   "Create a new journal entry (optionally attach images with -i).",
+		Short:   "Create a new journal entry (attach images with -i, audio with -a, or in TUI).",
 		Args:    cobra.NoArgs,
 		RunE:    createPost,
 	}