Refactor: Extract common code from LaunchRequestHandler's delegate

See ILaunchDelegate.java#L25-L27

    CompletableFuture<Response> launchInTerminal(LaunchArguments launchArguments, Response response, IDebugAdapterContext context);

    CompletableFuture<Response> launchInternally(LaunchArguments launchArguments, Response response, IDebugAdapterContext context);

There is common logic in implementation for both interfaces. The main differences in implementation for debug/noDebug are:

• launchInTerminal: It constructs different command string, and then take different actions according to response.
• launchInternally: It starts debuggee process in different ways.

Refactor work should be done to make code clean and readable.

Inizia da ILaunchDelegate.java alle righe 25-27, quindi esamina le implementazioni di launchInTerminal e launchInternally nel delegate di LaunchRequestHandler. Confronta la logica condivisa e le differenze debug/noDebug descritte nell'issue; il lavoro è completato quando il comportamento comune è consolidato e il delegate rimane leggibile senza modificare questi distinti comportamenti di avvio.