fix(files): add tiptap-text-direction extension to support RTL

Signed-off-by: julia.kirschenheuter <julia.kirschenheuter@nextcloud.com>

[skip ci]

Author: JuliaKirschenheuter

src/css/prosemirror.scss

@@ -278,6 +278,14 @@ div.ProseMirror {
 		}
 	}
 
+	li [dir="rtl"] {
+		text-align: right;
+	}
+
+	li [dir="ltr"] {
+		text-align: left;
+	}
+
 	ul, ol {
 		padding-left: 10px;
 		margin-left: 10px;

src/extensions/RichText.js

@@ -55,6 +55,7 @@ import TaskItem from './../nodes/TaskItem.js'
 import TaskList from './../nodes/TaskList.js'
 import Text from '@tiptap/extension-text'
 import TrailingNode from './../nodes/TrailingNode.js'
+import TextDirection from 'tiptap-text-direction'
 /* eslint-enable import/no-named-as-default */
 
 import { Strong, Italic, Strike, Link, Underline } from './../marks/index.js'