Report table/column descriptions in hover documentation

[jamietanna]

Is your feature request related to a problem? Please describe.

I have currently documented my database schema with comments above the table description, and alongside each column, i.e.:

-- renovate contains all dependencies that Renovate has been able to discover
-- about a given repository.
--
-- This may be retrieved through `renovate-graph` or via steps described in
-- https://gitlab.com/tanna.dev/dependency-management-data/-/issues/370
--
-- This is one of the first-class package Datasources
-- (https://dmd.tanna.dev/concepts/datasource/) that dependency-management-data
-- supports.
CREATE TABLE IF NOT EXISTS renovate (
  -- what platform hosts the source code that this Renovate data was produced
  -- for? i.e. `github`, `gitlab`, `gitea`, etc
  --
  -- See also: https://dmd.tanna.dev/concepts/repo-key/#platform
  platform TEXT NOT NULL,

However, these comments aren't shown.

Describe the solution you'd like

When using the LSP hover menu to get documentation on a symbol such as the platform field, or the renovate table, it would be useful to see the comments associated.

Describe alternatives you've considered

Additional context

Could this be a non-standard practice, perhaps?