[REQ][MySQL] snake_case table and column names

Created by: ybelenko

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

Current MySQL schema generator is far from perfect. I think that output of this generator should look exactly like mysqldump utility output or PHPMyAdmin SQL export. mysqldump and PHPMyAdmin are both stable and well-tested solutions, so same output would be a great achievement.

This particular issue is not about syntax, but SQL coding style. snake_case variables are what db developers used to see.

Describe the solution you'd like

Let's convert all table/column names to snake_case. Original variable name can be mentioned in table/column comment.

CREATE TABLE IF NOT EXISTS `file` (
  `source_uri` TEXT DEFAULT NULL COMMENT 'Original param name \'sourceURI\' '
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='Original model name \'File\'';

Should we add generator option to disable this enhancement? Where in codegen we should store snake_case name?

Additional context

I'm working on it, just want to track progress. Any suggestions or tips are welcome.