Add plotting of execution times from Scheduler GUI

One may consider interactive updating as well.

b_asic/gui_utils/mpl_window.py

+"""MPLWindow is a dialog that provides an Axes for plotting in."""
+
+from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
+from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
+from matplotlib.figure import Figure
+from qtpy.QtCore import Qt
+from qtpy.QtWidgets import QDialog, QVBoxLayout
+
+
+class MPLWindow(QDialog):
+    """
+    Dialog for plotting Matplotlib things.
+    """
+
+    def __init__(self, title: str = "B-ASIC"):
+        super().__init__()
+        self.setWindowFlags(
+            Qt.WindowTitleHint
+            | Qt.WindowCloseButtonHint
+            | Qt.WindowMinimizeButtonHint
+            | Qt.WindowMaximizeButtonHint
+        )
+        self.setWindowTitle(title)
+
+        self._dialog_layout = QVBoxLayout()
+        self.setLayout(self._dialog_layout)
+
+        self._plot_fig = Figure(figsize=(5, 4), layout="compressed")
+        self._plot_axes = self._plot_fig.add_subplot(111)
+
+        self._plot_canvas = FigureCanvas(self._plot_fig)
+        self._toolbar = NavigationToolbar(self._plot_canvas, self)
+
+        self._dialog_layout.addWidget(self._toolbar)
+        self._dialog_layout.addWidget(self._plot_canvas)
+
+    @property
+    def axes(self):
+        return self._plot_axes