Block editor toolbar addition for mixed Rtl Ltr writing directions. It wrap words (or sentences) in paragraph block with span element and change their direction from rtl->ltr or ltr->rtl as you need.
Uses dir=”rtl” or dir=”ltr”. See also Inline bidi markup at www.w3.org
Note that the wrapping element is < span dir=”rtl” || dir=”ltr” class=”atr-inline-direction-rtl” || class=”atr-inline-direction-ltr” > so you can control it through your site CSS as well. i.e. .atr-inline-direction-rtl{direction: rtl;display:inline-block}