multi-root folders: excluding dot files from a folder makes it invisible in file explorer (fixes #37899)

Update taskTemplates.ts

[html] auto indentation is different if the closing tag is followed by any character or whitespace. Fixes Microsoft/vscode#37869

Very tiny fix, the template for maven kept a taskName (old style) element.

Experiment with two compilation units

Start moving html ext to strict mode compile

Move css extension to strict

* Marked output code-line

* First Idea on where to get the platform

* Add platform info in code --version #37793 Done