[app] move PyRelacs main window to ui subpackage

pyrelacs/app.py

@@ -1,29 +1,12 @@
-import pathlib
-from PyQt6.QtGui import QAction
 import sys
+import pathlib
 
-from PyQt6.QtCore import QSize, QThreadPool, QSettings
-from PyQt6.QtWidgets import (
-    QApplication,
-    QGridLayout,
-    QPushButton,
-    QToolBar,
-    QWidget,
-    QMainWindow,
-    QPlainTextEdit,
-)
-import pyqtgraph as pg
-import uldaq
-from IPython import embed
-from scipy.signal import welch, find_peaks
-import numpy as np
-import nixio as nix
-
-from pyrelacs.util.logging import config_logging
-import pyrelacs.info as info
-from pyrelacs.worker import Worker
-from pyrelacs.repros.repros import Repro
+from PyQt6.QtCore import QSettings
+from PyQt6.QtWidgets import QApplication
 
+from . import info
+from .ui.mainwindow import PyRelacs
+from .util.logging import config_logging
 log = config_logging()