Redesign toolbar

[iiLubos]

New toolbar behavior:

• at least 4 buttons will always be visible
• all the others will go automatically into the menu
• the long button has defined minimum and maximum size

Toolbar_desktop.mov

Toolbar_mobile.mp4

  MMToolbar {
    model: ObjectModel {
      MMToolbarButton { text: qsTr("Delete"); iconSource: Style.deleteIcon }
      MMToolbarButton { text: qsTr("Edit Geometry"); iconSource: Style.editIcon }
      MMToolbarButton { text: qsTr("Save"); iconSource: Style.doneIcon; type: MMToolbarButton.Button.Save }
    }
  }

  MMToolbar {
    model: ObjectModel {
      MMToolbarLongButton { text: "Long button"; iconSource: Style.deleteIcon }
    }
  }

The design of the Drawer is defined in MMMenuDrawer.qml
and its menu buttons in MMToolbarMenuButton.qml