Ability to launch game using editor from VSCode?

### Godot version

v3.4.4.stable.official [419e713a2]

### VS Code version

N/A

### Godot Tools VS Code extension version

N/A

### System information

N/A

### Problem statement

As of currently, the extension can only launch the project using a specified Godot exec or attach to Godot and wait for the game to start. In the Godot C# Tools extension, you can have the extension tell the editor to start. This implies the editor can receive a sort of start request(unless it's specific to the C# builds).

Having the extension tell the editor to start the game is more convenience as it eliminates the need to specify a Godot exec since you need the editor to be running for LSP stuff anyway. Additionally, this extension seem to have some problems with debugging control(may create issues for them soon) while Godot can start, stop and restart the debugging process very reliably.

### Proposed solution

Add an option to have the extension tell the editor to start debugging.