remove ravenui.py by using plugin registry instead

raven/plugins/ravenlogplugin.py

@@ -75,6 +75,20 @@ class RavenLogPlugin(PluginBase):
     def current_file(self) -> Optional[str]:
         return self.main_window.tabs.current_file()
 
+    def update_window_title(self, title: str):
+        if len(title) > 0:
+            self.main_window.setWindowTitle(_("{0} - RavenLog").format(title))
+        else:
+            self.main_window.setWindowTitle(_("RavenLog"))
+
+    def update_status_bar(self, text: str):
+        if not self.main_window:
+            return
+        self.main_window.status_bar.showMessage(text)
+
+    def update_ui(self):
+        self.main_window.update()
+
     def add_tab(self, tab: Tab):
         self.main_window.tabs.add_tab(tab)