rename ravenlog to krowlog

There is a database named RavenDB.
KrowLog starts with a K, which is a) distinctive and b) has an association to KDE.

src/plugins/notesplugin.py

@@ -0,0 +1,35 @@
+from typing import Callable
+
+from PySide6.QtCore import Qt
+
+from src.pluginbase import PluginBase
+from src.pluginregistry import PluginRegistry
+from src.plugins.domain.menucontribution import MenuContribution
+from src.plugins.domain.raction import RAction
+from src.plugins.notes.noteswidget import NotesWidget
+from src.i18n import _
+
+
+class NotesPlugin(PluginBase):
+
+    def __init__(self):
+        super(NotesPlugin, self).__init__()
+        self.settings = None
+        self.tab_counter = 0
+
+    def get_menu_contributions(self) -> [MenuContribution]:
+        return [
+            MenuContribution("window", action=self._add_notes_tab_action(), action_id="add notes tab", after="<last>"),
+        ]
+
+    def _add_notes_tab_action(self) -> RAction:
+        open_file = RAction(_("Add &Notes"), self._add_notes_tab, shortcut='Ctrl+Shift+N',
+                            icon_from_theme="filenew")
+        return open_file
+
+    def _add_notes_tab(self):
+        self.tab_counter = self.tab_counter + 1
+        notes = NotesWidget(
+            "notes_tab_%d" % self.tab_counter,
+            _("Notes {0}").format(self.tab_counter))
+        PluginRegistry.execute_single("add_dock", Qt.DockWidgetArea.RightDockWidgetArea, notes)