fixes #95355

Moves applying default layout logic into layout.ts

* Add SyncActionDescriptor.from

There are a whole lot of places in our code where have the following pattern:

```
actionRegistry.registerWorkbenchAction(SyncActionDescriptor.create(CreateNewLocalTerminalAction, CreateNewLocalTerminalAction.ID, CreateNewLocalTerminalAction.LABEL));
```

Notice how the class name has to be repeated  three times.

This change introduces a helper function `SyncActionDescriptor.from` that lets you instead just pass in the class:

```js
actionRegistry.registerWorkbenchAction(SyncActionDescriptor.create(CreateNewLocalTerminalAction));
```

* Avoid cast

* use uuid for generated containers
* use dynamic titles based on container views
* add icons to built-in views

- do not remove if not registered
- pull replaces local completely

Co-Authored-By: NBenjamin Pasero <benjpas@microsoft.com>