Implement System Input Handling for CLI Execution

[federicovilla55]

This commit implements a solution to handle system input within the Command-Line Interface (CLI), as in Issue #353.

Implemented changes:

• A new method, SystemIO::setCLIInput(), was added in the systemio.h file that sets the input stream to STDIN. This method is used only by the CLI, which doesn't support multi-thread execution and thus cannot rely on the same input handling methods as the GUI. The GUI has a dedicated thread for reading console input, while other threads manage the rest of the program.
• The readFromFile() method was updated to handle STDIN input differently. When fd == STDIN, it now reads one byte at a time using InputStream.read(1). This continues until the specified number of bytes (lengthRequested) is reached or a newline ('\n') character is encountered.

This change ensures that both the GUI and CLI can correctly handle STDIN input. Without reading one byte at a time, the CLI could not properly process inputs of a size different from the requested length, since there isn't a function like putStdInData(const QByteArray &data) in the CLI that pushes data into the stdin buffer object.

Ripes/src/syscall/systemio.h

Lines 458 to 463 in 290c0e6

	void putStdInData(const QByteArray &data) {
	FileIOData::s_stdioMutex.lock();
	FileIOData::s_stdinBuffer.append(data);
	FileIOData::s_stdinBufferEmpty.wakeAll();
	FileIOData::s_stdioMutex.unlock();
	}

For the GUI, STDIN is handled through the QTextStream object, which is linked in the ConsoleWidget:

Ripes/src/consolewidget.cpp

Lines 23 to 25 in 290c0e6

	// Send input data from the console to the SystemIO stdin stream.
	connect(m_ui->console, &Console::sendData, &SystemIO::get(),
	&SystemIO::putStdInData);

To integrate the new input handling in the CLI, a call to SystemIO::setCLIInput() is added in the CLIRunner constructor to set the input stream to STDIN:

CLIRunner::CLIRunner(const CLIModeOptions &options)
    : QObject(), m_options(options) {
  // to handle system input
  SystemIO::setCLIInput();
}

With these changes the STDIN input can be handled in both Ripes mode (GUI and CLI).

[mortbopet]

#385 should fix the failing CI test