[Feature request] Multiline editor for Find & replace

Description of the Issue

Entering multiline find & replace patterns is very tedious because user has to use \r\n characters to enter new lines and it is hard to make oneself oriented in the sear/replace pattern. Multiline editor for Find & replace to ease entering multiline find & replace was nicely implemented in jEdit when user can just copy & paste multiline text to the find box (which is displayed as multiline) and do the same for replace pattern. User does not need to use escape sequences for most common characters such as Tab, NewLine and Line Feed characters.

Expected Behavior

Extend the find and replace box to be multiline and display multiline entries
Enter special characters such as Tab, New Line/Linefeed using Ctrl+, e.g. Ctrl+Enter adds new line character.

Actual Behavior

Currently, find and replaces patterns are displayed on a single line; user needs to use escape sequences for characters like \n\r\t and others.

No source file or test is identified in the issue; start by locating the Find and Replace UI entry point in the Notepad++ codebase. Done means both find and replace fields display and accept multiline text, with Ctrl+Enter inserting a newline and common special characters no longer requiring escape sequences.