Feature request: paste multiline text

[gAlleb]

Following #613
Creating a Feature request as suggested by @casperstorm.

Hi! Like this app. I'm using it on MacOS latest version via package.

Can't find a way to send multi line text. E.g. I want to send a small piece of code of 4 lines, I have to send each line separately. In other clients there are options like paste.

Suggested feature: ability to send/paste multiline text

There could be numerous implementations. What could be done:

1. Implementation of input box (small pop-up dialog) where one could paste the text and send it. Which can be called via key combination or via right click on Send message... input box.
2. An option with fetching current system buffer and populate an input box (paste window) with it.

3. Option to send either msg or notice.

4. Pasted text then could be sent by Halloy via independent messages:

Thanks!