[San 13] Add Not found page layout

[divnvp]

Какую задачу решаем: https://linear.app/sandworm-rampage/issue/SAN-13/vyorstka-stranicy-oshibok-400

Скриншоты:

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
middle-sandworm-rampage-praktikum-yandex-client	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 27, 2024 10:04am

[linear[bot]]

SAN-13 Вёрстка страницы ошибок 400