Tab Highlighting

[KartikM123]

How can I highlight specific tabs by filepath, both active or not, from an extension using the VSCode extension API? Alternatively, a way of adding custom file-specific indicators (e.g. dirty file indicator) from an extension would suffice.

For example, I would like some tabs to be highlighted as Purple whether they are active or not, as shown below.

In our use case, we technically would only need to distinguish files provided by a custom file system provider, not the default VS Code file system provider.

[usernamehw]

Blocked by #49382 OR (#49382 & #15178)

[roblourens]

Thanks @usernamehw!