List queryable analytics views, columns, and types (deprecated)

This experimental path is deprecated and is not supported for new integrations. Use GET /api/v2/analytics/schema instead; the old path remains available for existing integrations.

Returns the analytics views available to POST /query, with column names, ClickHouse types, and descriptions. Dimensions (dim_*) describe entities; facts (fact_*) are event/transaction tables that join to dimensions via the *_id columns described in each comment.