Add pinning support for dynamic launch configurations

[weinand]

Based on the dynamic debug config work of #88230 and #95835 we should now implement support to add dynamic launch configs to the launch.json (aka "pinning support") similar to what is done for tasks.

[isidorn]

What makes sense for me is to add a command in the command palette called
"Debug: Pin Configuration", the command would:

• only be available while you are debugging (and using a dynamic configuration)
• once chosen would just write the configuration to the end of your launch.json file
• once the configuration is written it would select it in the debug dropdown
• if you are a in a multi root workspace would ask in which launch.json to write it in

We could also add a Debug View title area Icon for this action when it is applicable. For that we would need a sort of Pin icon. fyi @misolori

@alexr00 can you maybe fill me in on how this looks like for tasks?

fyi @connor4312 @roblourens

[weinand]

@isidorn I suggest to do the same as tasks: have a gear action in the quickpick that adds the config at the end of the launch.json.
Just run the "Run Task" action, select one of the "folder" items, and in the resulting list of tasks click on the gear icon at the end of the task.

[isidorn]

@weinand I like having an action in the quick pick. We can start with the gear icon though not sure if that icon is perfect
@alexr00 I could only get the Configure Action when trying this out from vscode repository. Is there a way to get an action to actually write a task.json down

[miguelsolorio]

We already have two pin icons that you can use:

[weinand]

I like the pinning icons und could imagine to use the "pin" in the dynamic debug config sub-quickpick. We have no need for the "pinned" icon because we are not tracking whether an debug config was pinned (because it can be pinned many times for customisation).

@alexr00 would you start using the "pin" icon in task land as well?

[isidorn]

Agree. We would use the pin icon only.
Thanks @misolori for pointing out those.

[alexr00]

For tasks, it isn't just about pinning, you can actually modify properties of the task when you click the gear. Since tasks have a recently used section, pinning isn't why I'd expect people to add tasks to tasks.json. Instead, they'd add them because they want to change some task properties. I don't find the pin icon to fit this as well as the gear.

For tasks, we have the gear entry point in Run Task and we also have a separate command in the command palette: Configure Task.

[alexr00]

I could only get the Configure Action when trying this out from vscode repository. Is there a way to get an action to actually write a task.json down

@isidorn, it should show on every task in the Run Task quick pick.

[isidorn]

I have a first version of this working. I have pushed it to master so you can try it out.
Please note the following:

1. I am using the Pin icon provided by @misolori
2. The hover text of the action is "Pin Launch Configuration"
3. Once user clicks -> we close quick open, open launch.json, write the configuration and auto select it in the debug dropdown