I made two small corrections and a refactoring in this PR:
1. There was an error in an environment variable related to the bucket name that was passed in the aws-cdk build.
2. When updating the lambda function log, I assigned the new enum to the old variable, but I have now corrected it to the proper variable.
3. It didn't make sense to have a file just to keep a global variable related to the Counter, so I removed the file and moved the global variable to the shared-aws/counter.ts file.
## Checklist
- [x] Title matches [Winglang's style guide](https://www.winglang.io/contributing/start-here/pull_requests#how-are-pull-request-titles-formatted)
- [x] Description explains motivation and solution
- [ ] Tests added (always)
- [ ] Docs updated (only required for features)
- [ ] Added `pr/e2e-full` label if this feature requires end-to-end testing
*By submitting this pull request, I confirm that my contribution is made under the terms of the [Wing Cloud Contribution License](https://github.com/winglang/wing/blob/main/CONTRIBUTION_LICENSE.md)*.
