feat: introduce bulkDelete method for IFileProvider (#12614)

Fixes: FRMW-2974

Currently during the product imports, we create multiple chunks that must be deleted after the import has finished (either successfully or with an error). Deleting files one by one leads to multiple network calls and slows down everything.

The `bulkDelete` method deletes multiple files (with their fileKey) in one go

packages/modules/providers/file-s3/integration-tests/__tests__/services.spec.ts

@@ -160,4 +160,31 @@ describe.skip("S3 File Plugin", () => {
 
     await s3Service.delete({ fileKey: resp.key })
   })
+
+  it("deletes multiple files in bulk", async () => {
+    const fileContent = await fs.readFile(fixtureImagePath)
+    const fixtureAsBinary = fileContent.toString("binary")
+
+    const cat = await s3Service.upload({
+      filename: "catphoto.jpg",
+      mimeType: "image/jpeg",
+      content: fixtureAsBinary,
+    })
+    const cat1 = await s3Service.upload({
+      filename: "catphoto-1.jpg",
+      mimeType: "image/jpeg",
+      content: fixtureAsBinary,
+    })
+    const cat2 = await s3Service.upload({
+      filename: "catphoto-2.jpg",
+      mimeType: "image/jpeg",
+      content: fixtureAsBinary,
+    })
+
+    await s3Service.delete([
+      { fileKey: cat.key },
+      { fileKey: cat1.key },
+      { fileKey: cat2.key },
+    ])
+  })
 })