workspace.openTextDocument works incorectly when passing { content?: string; } as argument (fix #34796)

* Workspace folder picker command (for #32936)

* fix test

* make this proper API

Have `workspace.applyEdit` correctly account for model version changes and reply with false if a model was loaded and changed in the meantime

Fix #32235. Functional style formatter. Color range is all float number and remove fromHex, fromHSL methods.

This reverts commit 94c4b25a.