Minimap Section Header Labels Are Really Hard To Read

[pouyakary]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.88.0
• OS Version: Darwin arm64 23.0.0

The amazing work of @dgileadi on #190759 has been a wish come true for many of us. (Thanks a lot really!). In the past days trying to use it, I have noticed that it lacks readability a lot. I compared the feature to Xcode and what I saw was two things:

1. Xcode's version has bolder font
2. Xcode's version has letter spacing of around 1px

The combination of the two makes readability a lot more on Xcode's side on even smaller font sizes than of the vscode:

Thanks to the freshness of the feature, I could read the PR and develop both of them for vscode as well, which I will create as a PR right away:

[pouyakary]

There are also other things, like configuring the color of the labels (which can also make them a lot readable and unreadable, and I'm going to fix them as well)

[dimateos]

Not exactly related, as this issue targets the minimap view.

But we could also let the user configure the looks of the section markers in the editor:

I used a highlighter extension like https://marketplace.visualstudio.com/items?itemName=fabiospampinato.vscode-highlight (there are many similar)

I gave a custom style to the marker and the title. Also added custom gutter and scrollbar overview rulers (I can post the config, just ask)

Also if you note, I used two different markers to kind of specify hierarchy and matched them with different syles.
This styling could be potentially mixed with custom tags as in #209904, for example to achieve this hierarchy and also style customization.

Overall this marker hightlighting customization is similar to what existing extension do, but with built-in support (hence I hope better performance) and minimap renders.

Could open a separate issue, but seemed related and discussable here

[pouyakary]

@dimateos I agree that having in-editor decorations is also neccessary. But you should move the comment to a separate issue since it is a whole different topic. Aslo link it to #190759 or #74843