Configurable RF/TCN/ICLS/LINK4 with UI feedback

Resolves #70

Freq/Channel will turn orange when double booked.
Freq will turn red if GUARD freq was assigned.

qt_ui/windows/QICLSDialog.py

@@ -0,0 +1,54 @@
+from typing import Optional
+
+from PySide2.QtCore import Qt
+from PySide2.QtWidgets import (
+    QDialog,
+    QPushButton,
+    QLabel,
+    QHBoxLayout,
+    QSpinBox,
+    QLineEdit,
+)
+
+from game.radio.ICLSContainer import ICLSContainer
+from qt_ui.uiconstants import EVENT_ICONS
+
+
+class QICLSDialog(QDialog):
+    def __init__(self, parent=None, container: Optional[ICLSContainer] = None) -> None:
+        super().__init__(parent=parent)
+        self.container = container
+        self.setMinimumWidth(400)
+
+        # Make dialog modal to prevent background windows to close unexpectedly.
+        self.setModal(True)
+
+        self.setWindowTitle("Assign ICLS")
+        self.setWindowIcon(EVENT_ICONS["strike"])
+
+        layout = QHBoxLayout()
+
+        self.icls_label = QLabel("ICLS:")
+        self.icls_input = QSpinBox()
+        self.icls_input.setRange(1, 20)
+        self.icls_input.setSingleStep(1)
+        layout.addWidget(self.icls_label)
+        layout.addStretch()
+        layout.addWidget(self.icls_input)
+        self.callsign_input = QLineEdit()
+        self.callsign_input.setMaxLength(3)
+        self.callsign_input.setMaximumWidth(50)
+        layout.addWidget(self.callsign_input)
+        layout.addStretch()
+
+        self.create_button = QPushButton("Save")
+        self.create_button.clicked.connect(self.accept)
+        layout.addWidget(self.create_button, alignment=Qt.AlignRight)
+
+        self.setLayout(layout)
+
+        if container is not None:
+            if container.icls_name is not None:
+                self.callsign_input.setText(container.icls_name)
+            if container.icls_channel is not None:
+                self.icls_input.setValue(container.icls_channel)