Guide: stored procedures and prepared statements equivalents in ClickHouse

[Blargian]

Summary

Addresses one of the Kapa content gap suggestions.

Checklist

• Delete items not relevant to your PR
• URL changes should add a redirect to the old URL via https://github.com/ClickHouse/clickhouse-docs/blob/main/docusaurus.config.js
• If adding a new integration page, also add an entry to the integrations list here: https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/integrations/index.mdx

[vercel]

@Blargian is attempting to deploy a commit to the ClickHouse Team on Vercel.

A member of the Team first needs to authorize it.

[dhtclk]

Perhaps we should consider including TL;DR blocks in all or most of our new guides moving forward similar to what has been introduced with clickstack guides.

[dhtclk]

can we make these autogenerated as we go?