ref(cloudflare): Move internal files and functions around

[github-actions]

Note

The pull request "ref(cloudflare): Move internal files and functions around" was created by @JPeer264 but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

This actually doesn't add any functionality or remove functionality. This PR only prepares for future PRs where we add instrumentations for DurableObjects. As the functionality will grow and reduce line size I moved them around

[linear]

JS-1737

[github-actions]

A PR closing this issue has just been released 🚀

This issue was referenced by PR #19369, which was included in the 10.40.0 release.