[feat] Multi line replace in file(s)

[abose]

Describe the problem

Currently we only support multi line search, we just need to change the text input to text area to support multi line replace as well. The current internal framework already supports multi line replace, the only issue is that we have a text input instead of text area in ui on initial investigation.

Describe the solution you'd like

multi line input replace text box

Alternatives considered

A partial fix eas done as part of #1515 to support multi line search but not multi line replace 2 years ago(2023).

Additional context

#1209