UBERF-7495: Global editor kit extensions (#6057)

Signed-off-by: Alexey Zinoviev <alexey.zinoviev@xored.com>

plugins/text-editor-resources/src/components/StringDiffViewer.svelte

@@ -0,0 +1,36 @@
+<!--
+//
+// Copyright © 2022, 2023, 2024 Hardcore Engineering Inc.
+//
+// Licensed under the Eclipse Public License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License. You may
+// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+-->
+<script lang="ts">
+  import * as Diff from 'diff'
+
+  export let value: string
+  export let compareTo: string
+  export let method: 'diffChars' | 'diffWords' | 'diffWordsWithSpace' = 'diffChars'
+
+  const handleDiff = (oldValue: string, newValue: string): Diff.Change[] => Diff[method](oldValue, newValue)
+
+  $: changes = handleDiff(compareTo, value)
+</script>
+
+{#each changes as change}
+  <span
+    class:text-editor-highlighted-node-add={change.added}
+    class:text-editor-highlighted-node-delete={change.removed}
+  >
+    {change.value}
+  </span>
+{/each}