Generate table engine, database engine, data type, I/O format, dictionary layout, aggregate function combinator, data skipping index type, disk type and database engine docs from the source

[rschu1ze]

As per

• Add embedded documentation for table engines ClickHouse#106177
• Add embedded documentation for database engines ClickHouse#106178
• Add embedded documentation for data types ClickHouse#106180
• Add embedded documentation for input/output formats ClickHouse#106181
• Add embedded documentation and a system table for dictionary layouts ClickHouse#106182
• Add embedded documentation and a system table for dictionary sources ClickHouse#106184
• Add embedded documentation for aggregate function combinators ClickHouse#106185
• Add embedded documentation and a system table for data skipping index types ClickHouse#106186
• Add embedded documentation and a system table for disk types ClickHouse#106187
• Add embedded documentation for database engines ClickHouse#106178

more information is now exposed as system tables. At the moment, the docs on the website are still generated from markdown in the ClickHouse repository. This ticket asks to let the docs generator do this instead from the system table output.

[rschu1ze]

EDIT: I found another PR that needs integration from the docs side (auto-generating markdown from system.asynchronous_metrics):

• Generate system.asynchronous_metrics docs from C++ source ClickHouse#105167