Generated Enum names do not conform to either PascalCase or CamelCase

[Goldziher]

Hi there,

Thanks for this plugin! I love sqlc and I'm excited to try it in python as well.

Without further ado, here is the issue. Given the following pgsql enums:

CREATE TYPE ProjectState AS ENUM ('PRE', 'AUDIT', 'POST', 'FINISHED');
CREATE TYPE DomainComplexity AS ENUM ('SIMPLE', 'MODERATE', 'COMPLEX', 'HIGHLY_COMPLEX');

I would expect the output to have the same name format. Instead what I am getting is this:

class Projectstate(str, enum.Enum):
    PRE = "PRE"
    AUDIT = "AUDIT"
    POST = "POST"
    FINISHED = "FINISHED"

class Domaincomplexity(str, enum.Enum):
    SIMPLE = "SIMPLE"
    MODERATE = "MODERATE"
    COMPLEX = "COMPLEX"
    HIGHLY_COMPLEX = "HIGHLY_COMPLEX"

Expected would be:

class ProjectState(str, enum.Enum):
    ...

class DomainComplexity(str, enum.Enum):
    ...