Refactor ProcessInterface

enum class ControlSignal {
    Terminate,
    Kill,
    Interrupt,
    KickOff
};

enum class ProcessSignal {
    Started,
    ReadyRead,
    Done
};

class QTCREATOR_UTILS_EXPORT ProcessInterface : public QObject
{
    Q_OBJECT

public:
    ProcessInterface(QObject *parent = nullptr) : QObject(parent) {}

signals:
    void started(qint64 processId, qint64 appMainThreadId = -1);
    void done(const Utils::ProcessResultData &resultData);
    void readyReadStandardOutput(const QByteArray &data);
    void readyReadStandardError(const QByteArray &data);

private:
    virtual void start(const ProcessSetupData &setupData) = 0;
    virtual qint64 write(const QByteArray &data) = 0;
    virtual void sendControlSignal(ControlSignal controlSignal) = 0;
    virtual bool waitForProcessSignal(ProcessSignal processSignal, int msecs) = 0;
};