[Ann] Commander shortcuts in Settings Browser

> Hi.
>
> With latest version of Commander and Calypso we will have all shortcuts
> explorable and configurable in Settings Browser:
>
>
> ​
> Currently it uses command class name and class comment for presentation.
> We can improve it in future if necessary.
> In addition you can add single shortcut to your own application
> settings. For example:
>
>     MyApp class>>appSettingsOn: aBuilder
>         <systemsettings>
>
>
>         ann := ClySpawnFullBrowserCommand classAnnotationAt:
>     #browserShortcutActivation.
>
>         (ann buildSettingNodeOn: aBuilder)
>
>            label: 'My app shortcut';
>
>            description: 'This command opens browser'
>
>
> Shortcut settings are persisted as all other settings. Only redefined
> shortcuts are stored into the file.
>
> This version also allows to add commands into the world menu and world
> shortcuts. Just use CmdWorldMenuContext for command annotations:
>
>     CmdOpenFamilyBookCommand class>>worldMenuActivation
>       <classAnnotation>
>       ^CmdContextMenuCommandActivation byRootGroupItemFor:
>     CmdWorldMenuContext 
>
>
>     CmdOpenFamilyBookCommand class>>globalShortcutActivation
>       <classAnnotation>
>       ^CmdShortcutCommandActivation by: $o meta, $f meta for:
>     CmdWorldMenuContext 
>
> (CmdOpenFamilyBookCommand is a command from Commander-Examples package).
>
> Nice detail: all shortcuts are updated immediately when you modify
> annotations either from settings or programmatically from browser. 
>
> Now pull request for Pharo 7
> <https://github.com/pharo-project/pharo/pull/1037> is waiting
> integration. Soon it will be inside.
>
> Best regards,
> Denis