[ja] Update content/ja/docs/concepts/services-networking/service.md

Update the Japanese translation of content/ja/docs/concepts/services-networking/service.md to match the latest English version.
Also create content/ja/docs/reference/networking/virtual-ips.md to preserve content moved from service.md.

Fixes #53415

Signed-off-by: oromao <[email protected]>

Author: oromao