Show actual size of bytes of selected text, not just the character length

[dorkerdev]

One thing I liked about the old Notepad2 is how selecting text not only showed you the character length of the string, but its actual size in bytes. This is useful for checking byte lengths of strings that contain characters comprised of multiple bytes such as Привет мир (2 bytes) and other glyphs like Ｈｅｌｌｏ ｗｏｒｌｄ (3 bytes) and 𝙃𝙚𝙡𝙡𝙤 𝙬𝙤𝙧𝙡𝙙 (4 bytes).

This is how Notepad2-mod shows selected text lengths: