Generate dictionary files automatically - Add support for views

What does this MR do and why?

Currently, the rake task gitlab:db:dictionary:generate does not generate dictionary files for views. In this merge request, we are adding views support.

Issue: gitlab-org/database-team/team-tasks#293 (closed)

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.