feat(docs): Translate Aspect example to Go

[ansgarm]

Note: This PR depends on #2439 (It is a separate PR because the example currently still fails due to some JSII error).

Running this example fails with:

panic: @jsii/kernel.SerializationError: Passed to parameter aspect of method cdktf.Aspects#add: Unable to deserialize value as cdktf.IAspect
├── 🛑 Failing value is an object
│      { Tags: [Object] }
╰── 🔍 Failure reason(s):
    ╰─ Value does not have the "$jsii.byref" key

which seems to be because we create a struct for our Aspect in Go (to store the tags to append) that is not available in the Nodejs side of things and hence causes an error.

Unfortunately there is no existing example from the AWS CDK that uses an Aspect in Golang. So I don't know whether this is even possible currently.

Related examples / issues I found:

• A (closed) bug in JSII that doesn't store data in the struct of the Aspect though: bug(go): Using Aspects causes panic: Call using *awscdk.IConstruct as type awscdk.IConstruct aws/jsii#2793
• The AWS CDK Go docs Aspects example also does not store data (and seems to be invalid Go code): https://pkg.go.dev/github.com/aws/aws-cdk-go/awscdk/v2#Aspects

[ansgarm]

Update: With the help of this Go testcase within JSII, I was able to stumble upon my error of passing the struct and not a pointer to the struct. Using that solved it (commit).

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days. This helps our maintainers find and focus on the active issues. If you've found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.