Add ability to display icons in Code Lenses

[DonJayamanne]

• VSCode Version: Insiders

Add ability to display Octicons in Code Lenses.
My plan is to display the results (as done here in VS) of unittests against each method.
Part of the functionality has been provided through #10648 (refreshing code lenses).
Now i'd like to display a red "X" or a green "Tick" (what ever the standard Octicons may be).

[mjbvz]

As a workaround, you may be able to use emoji or regular unicode symbols to achieve a similar effect:

One downside to this is that these will vary somewhat between operating systems

[DonJayamanne]

Thanks for the tip

[kondratyev-nv]

@jrieken I would like to try fixing it. Would that be ok? Maybe you can think of some pitfalls?

[jrieken]

Use the utils from octiconLabel.ts and wire things up here: codelensWidget.ts#L78 One thing to consider is that maybe not all users want octicons, e.g one might be using $(zap) and not want ⚡️ but we can consider that later