allow to modify graphql executor

[jcbbb]

I need a way to modify graphql executor to setErrorPresenter of my own.

[cypress]

Default Project    Run #30

Run Properties:   Failed #30  •  5464f41f8d: Merge pull request #149 from iota-uz/modify_executor

Project	Default Project
Branch Review	main
Run status	Failed #30
Run duration	00m 21s
Commit	5464f41f8d: Merge pull request #149 from iota-uz/modify_executor
Committer	Diyor Khaydarov
View all properties for this run ↗︎

---

Test results
Failures	1
Flaky	0
Pending	0
Skipped	0
Passing	0
View all changes introduced in this branch ↗︎

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Tests for review

  cypress/e2e/users/register.cy.js • 1 failed test

View Output

Test		Artifacts
user auth and registration flow > creates a user and displays changes in users table		Screenshots

[jcbbb]

app.RegisterGraphSchema(application.GraphSchema{
    Value:    graph.NewExecutableSchema(config),
    BasePath: "/website",
    ExecutorCb: func (exec *executor.Executor) {
         exec.SetErrorPresenter(func(ctx context.Context, e error) *gqlerror.Error {
	    var appError *myCustomErr
	    err := graphql.DefaultErrorPresenter(ctx, e)
	    localizer, ok := LocalizerFromContext(ctx)
	    if !ok {
		return err
	    }
	    if errors.As(e, &myCustomErr) {
		err.Message = eai.ErrorMessage(appError, localizer)
	    }
	    return err
	})
    }
})