Issue #3239667: Drupal 10 & CKEditor 5 readiness

config/schema/ckeditor_font.schema.yml

-ckeditor.plugin.font:
+ckeditor5.plugin.ckeditor_font_font:
   type: mapping
-  label: 'Font button'
+  label: 'Font Family'
   mapping:
-    font_names:
-      type: text
-      label: 'Font names'
-    font_sizes:
-      type: text
-      label: 'Font sizes'
+    font_names: 
+      type: string
+      label: 'Font families'
+    supportAllSizeValues:
+      type: boolean
+      label: 'Support all values'
+    font_sizes: 
+      type: string
+      label: 'Font Sizes'
+    supportAllFamilyValues:
+      type: boolean
+      label: 'Suport all values'
+ckeditor5.plugin.ckeditor_font_font_color:
+  type: mapping
+  label: 'Font Color'
+  mapping:
+    font_colors: 
+      type: string
+      label: 'Colors'
+    columns:
+      type: integer
+      label: 'Columns'
+    documentColors:
+      type: integer
+      label: 'Maximum available colors'
+ckeditor5.plugin.ckeditor_font_font_background_color:
+  type: mapping
+  label: 'Font Background Color'
+  mapping:
+    font_backgroundcolors: 
+      type: string
+      label: 'Colors'
+    columns:
+      type: integer
+      label: 'Columns'
+    documentColors:
+      type: integer
+      label: 'Maximum available colors'
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