Fix: Added shortcut for toggling hourly and daily view
data/weather-widget.ui: Added GtkShortcutController for activating the action
Allow toggling between Hourly and Daily view with Ctrl + 1.
Currently there is no shortcut for toggling the hourly and daily view.
To fix this, created an action (switchViewAction) which changes the visible_child_name of forecastStack and added a GtkShortcutController to toggle it.