Object flag not generated

[thomaspoignant]

When trying to generate the code for the sample manifest in sample/sample_manifest.json the code is well generated except for the object flag (themeCustomization).

Step to reproduce

1. Clone the repository
2. Build the cli

    go build .

3. Run the command

    ./codegen generate go --package_name completion --flag_manifest_path=./sample/sample_manifest.json --output_path=./completion.go

4. Output is

   package completion
   
   import "context"
   
   import (
   	"github.com/open-feature/go-sdk/openfeature"
   )
   
   type BooleanProvider func(ctx context.Context) (bool, error)
   type FloatProvider func(ctx context.Context) (float64, error)
   type IntProvider func(ctx context.Context) (int64, error)
   type StringProvider func(ctx context.Context) (string, error)
   
   var client *openfeature.Client = nil
   
   // Controls whether Feature A is enabled.
   var EnableFeatureA = struct {
   	Value BooleanProvider
   }{
   	Value: func(ctx context.Context) (bool, error) {
   		return client.BooleanValue(ctx, "enableFeatureA", false, openfeature.EvaluationContext{})
   	},
   }
   
   // Maximum allowed length for usernames.
   var UsernameMaxLength = struct {
   	Value IntProvider
   }{
   	Value: func(ctx context.Context) (int64, error) {
   		return client.IntValue(ctx, "usernameMaxLength", 50, openfeature.EvaluationContext{})
   	},
   }
   
   // The message to use for greeting users.
   var GreetingMessage = struct {
   	Value StringProvider
   }{
   	Value: func(ctx context.Context) (string, error) {
   		return client.StringValue(ctx, "greetingMessage", "Hello there!", openfeature.EvaluationContext{})
   	},
   }
   
   // Discount percentage applied to purchases.
   var DiscountPercentage = struct {
   	Value FloatProvider
   }{
   	Value: func(ctx context.Context) (float64, error) {
   		return client.FloatValue(ctx, "discountPercentage", 0.15, openfeature.EvaluationContext{})
   	},
   }
   
   func init() {
   	client = openfeature.NewClient("github.com/thomaspoignant/go-feature-flag")
   }

[beeme1mr]

I believe this is intentional for now, but we should add support soon.

https://github.com/open-feature/codegen/blob/main/internal/generate/plugins/golang/golang.go#L36