feat: huma.RegisterTypeSchema

[fy0]

#698

Usage examples:

huma.RegisterTypeSchema(reflect.TypeOf(pgtype.Text{}), func(huma.Registry) *huma.Schema {
	return &huma.Schema{
		Type:     "string",
		Nullable: true,
	}
})

huma.RegisterTypeSchema(reflect.TypeOf(pgtype.Bool{}), func(huma.Registry) *huma.Schema {
	return &huma.Schema{
		Type:     "boolean",
		Nullable: true,
	}
})

huma.RegisterTypeSchema(reflect.TypeOf(pgtype.Int8{}), func(huma.Registry) *huma.Schema {
	return &huma.Schema{
		Type:     "integer",
		Nullable: true,
	}
})

// Register the schema for the `any` interface type so that it appears as an arbitrary object in the documentation.
huma.RegisterTypeSchema(reflect.TypeOf((*any)(nil)).Elem(), func(huma.Registry) *huma.Schema {
	return &huma.Schema{
		Type:                 "object",
		AdditionalProperties: map[string]*huma.Schema{},
	}
})

// Handle []any
huma.RegisterTypeSchema(reflect.TypeOf([]any{}), func(huma.Registry) *huma.Schema {
	return &huma.Schema{
		Type: "array",
		Items: &huma.Schema{
			Type:                 "object",
			AdditionalProperties: map[string]*huma.Schema{},
		},
	}
})