refactor: workspaces DDD (#8921)

## Summary

Refactor: workspaces related functionality into DDD structure.

Note: this is the 1st PR of 2 more refactoring.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8921-refactor-DDD-3096d73d3650812bb7f6eb955f042663)
by [Unito](https://www.unito.io)

src/platform/workspace/components/dialogs/RemoveMemberDialogContent.vue

@@ -0,0 +1,83 @@
+<template>
+  <div
+    class="flex w-full max-w-[360px] flex-col rounded-2xl border border-border-default bg-base-background"
+  >
+    <!-- Header -->
+    <div
+      class="flex h-12 items-center justify-between border-b border-border-default px-4"
+    >
+      <h2 class="m-0 text-sm font-normal text-base-foreground">
+        {{ $t('workspacePanel.removeMemberDialog.title') }}
+      </h2>
+      <button
+        class="cursor-pointer rounded border-none bg-transparent p-0 text-muted-foreground transition-colors hover:text-base-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-secondary-foreground"
+        :aria-label="$t('g.close')"
+        @click="onCancel"
+      >
+        <i class="pi pi-times size-4" />
+      </button>
+    </div>
+
+    <!-- Body -->
+    <div class="px-4 py-4">
+      <p class="m-0 text-sm text-muted-foreground">
+        {{ $t('workspacePanel.removeMemberDialog.message') }}
+      </p>
+    </div>
+
+    <!-- Footer -->
+    <div class="flex items-center justify-end gap-4 px-4 py-4">
+      <Button variant="muted-textonly" @click="onCancel">
+        {{ $t('g.cancel') }}
+      </Button>
+      <Button variant="destructive" size="lg" :loading @click="onRemove">
+        {{ $t('workspacePanel.removeMemberDialog.remove') }}
+      </Button>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { useToast } from 'primevue/usetoast'
+import { ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+
+import Button from '@/components/ui/button/Button.vue'
+import { useTeamWorkspaceStore } from '@/platform/workspace/stores/teamWorkspaceStore'
+import { useDialogStore } from '@/stores/dialogStore'
+
+const { memberId } = defineProps<{
+  memberId: string
+}>()
+
+const dialogStore = useDialogStore()
+const workspaceStore = useTeamWorkspaceStore()
+const toast = useToast()
+const { t } = useI18n()
+const loading = ref(false)
+
+function onCancel() {
+  dialogStore.closeDialog({ key: 'remove-member' })
+}
+
+async function onRemove() {
+  loading.value = true
+  try {
+    await workspaceStore.removeMember(memberId)
+    toast.add({
+      severity: 'success',
+      summary: t('workspacePanel.removeMemberDialog.success'),
+      life: 2000
+    })
+    dialogStore.closeDialog({ key: 'remove-member' })
+  } catch {
+    toast.add({
+      severity: 'error',
+      summary: t('workspacePanel.removeMemberDialog.error'),
+      life: 3000
+    })
+  } finally {
+    loading.value = false
+  }
+}
+</script>