Add options to replace serials and missing refs

[joshbwlng]

Add new options to replace Serial/Big Serial typed
fields and instead return them as Integer. And another
option to replace missing references with the references
datatype.

Change-type: minor

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[Page-]

Can you add these behind an opts object for abstractSqlToTypescriptTypes so that it is possible to tailor the generated output based on the use case, because there are definitely use cases where keeping the field references as type references makes sense (any case where we aren't subsetting the model imo)

[joshbwlng]

@Page- Made some changes that I think get this PR a bit closer. If we do in fact want to keep two separate options I'll split them out into two separate commits.

[joshbwlng]

Split this work into:

• Inline type on missing reference #92
• Add option to replace Serial with Integer #91