🎨(frontend) better conversion editor to pdf

A recent update from Blocknote provides us the
alignment, the color and the background color of
the different editor texts. We adapt our converter
to adapt these new features to the pdf.

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to
 
 ## [Unreleased]
 
+## Added
+
+- 🎨(frontend) better conversion editor to pdf #151
+
 ## [1.1.0] - 2024-07-15
 
 ## Added