Find a cood icon and implement it

If you open the settings, you cannot close them because the pane is over the settings toggle,

-Enable close settings button (CloseButtonVisibility)
OR
-close on lost focus
OR
-change position of setings toggle

Rtf preview with rotatable control.

When the RTF text input is up, parse and display the RTF text as content.

If the RichTextBox is on top, parse the content to RTF text and show it.

QR Code Generator Tab, swappable control.
If qr section is on the left, make a file select and read the codes from the files/images

if we save a configuration e.g. when switching darkmode, there should be no exception as the configuration is already in the dictionary.

Update the value