Add workbench tabs (#6788)

Signed-off-by: Kristina Fefelova <kristin.fefelova@gmail.com>

plugins/workbench-resources/src/components/WorkbenchTabs.svelte

@@ -0,0 +1,38 @@
+<!--
+// Copyright © 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 { createTab, tabsStore } from '../workbench'
+  import WorkbenchTabPresenter from './WorkbenchTabPresenter.svelte'
+  import { IconAdd, ButtonIcon } from '@hcengineering/ui'
+</script>
+
+<div class="root flex-gap-1">
+  {#each $tabsStore as tab}
+    <WorkbenchTabPresenter {tab} />
+  {/each}
+  <div class="ml-1-5 plus-button mr-1">
+    <ButtonIcon icon={IconAdd} size="min" kind="tertiary" on:click={createTab} />
+  </div>
+</div>
+
+<style>
+  .root {
+    display: flex;
+    align-items: center;
+  }
+  .plus-button {
+    height: 0.875rem;
+  }
+</style>