Refactored and improved seeds (#8695)

- Added a new Seeder service to help with custom object seeds
- Added RichTextFieldInput to edit a rich text field directly on the
table, but deactivated it for now.

packages/twenty-front/src/modules/settings/data-model/constants/SettingsNonCompositeFieldTypeConfigs.ts

@@ -125,7 +125,7 @@ export const SETTINGS_NON_COMPOSITE_FIELD_TYPE_CONFIGS: SettingsNonCompositeFiel
     [FieldMetadataType.RichText]: {
       label: 'Rich Text',
       Icon: IllustrationIconSetting,
-      exampleValue: { key: 'value' },
+      exampleValue: "{ key: 'value' }",
       category: 'Basic',
     } as const satisfies SettingsFieldTypeConfig<FieldRichTextValue>,
     [FieldMetadataType.Array]: {