One does exist. Although it’s abit hard to find.
It seems the OG9 patch for MyTools in OFS3 adds this feature.
https://discuss.eroscripts.com/t/my-tools-extension-for-openfunscripter/
Patch download: TheHandyいいよね / OG9プロフィール - Ci-en（シエン）
(I used google translate to translate the page so I’ll find what I’m looking for)
“Paste Pattern Before” and “Paste Pattern After” wasn’t in the original extension, but the patch by OG9