[FR] Customizable rectangular selection copy format

[RyotaUshio]

Discussed in #96

^{Originally posted by IvanRo39 March 10, 2024}
Well, it's a really amazing plugin, I'm trying to use it to replace the workflow I'm taking on Marginnote. but I don't know how to custom the format of the image generated by rectangular selection in my notes. Like the screenshot down below, I wonder how to delete the line 103 and the line 105, where both of them contain nothing. Thx :D