[FEATURE]: Generate TypeScript enum instead of array of strings when running `drizzle-kit introspect`

[DePasqualeOrg]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

Now that pgEnum and mysqlEnum have more useful functionality in the latest version of Drizzle, it would be great if drizzle-kit would default to generating TypeScript enums instead of arrays of strings when running introspect, so that we can use this functionality without making manual changes to the schema each time introspect is run.

Alternatively, perhaps this behavior could be controlled by a config setting.