Add Operations to Debug Console

### Godot version

3.4.4.stable

### VS Code version

1.68.1

### Godot Tools VS Code extension version

1.3.1

### System information

Windows 10

### Problem statement

It's not possible to do various operations in the Debug Console after hitting a breakpoint.

See here for all the different operations possible: https://docs.godotengine.org/en/stable/tutorials/scripting/gdscript/gdscript_basics.html

For example if you hit a breakpoint in a Node2D script you might want to change the position of that Node2D.

So in the Debug Console you would type something like:
```
position.x = 10
```

You can set some values through the Inspector, but some types don't work. See: https://github.com/godotengine/godot-vscode-plugin/issues/383

This proceeds this issue: https://github.com/godotengine/godot-vscode-plugin/issues/381
Of which I have a proposed PR for: https://github.com/godotengine/godot-vscode-plugin/pull/387

### Proposed solution

Using the existing infrastructure communicating between the extension and Godot we can implement various operations.

In VS Code if you run:
```
Mediator.notify("changed_value", [
object_id,
variable_name,
value,
]);
```

That will go over to the Godot Engine and hit the following function in **script_debugger_remote.cpp**:
```
void _set_object_property(ObjectID p_id, const String &p_property, const Variant &p_value);
```

So it's merely a matter of understanding how to format the values properly for all the different types.