rework on icons display

data/applications/pamac-install.desktop

data/applications/pamac-manager.desktop

data/applications/pamac-updater.desktop

data/icons/16x16/apps/exit.png

data/icons/16x16/apps/pamac-updater.png

data/icons/16x16/apps/system-software-install.png

data/icons/24x24/status/package-update.png

data/icons/24x24/status/pamac-add.png

data/icons/24x24/status/pamac-cleanup.png

data/icons/24x24/status/pamac-delete.png

data/icons/24x24/status/pamac-download.png

data/icons/24x24/status/pamac-refresh.png

data/icons/24x24/status/pamac-search.png

data/icons/24x24/status/pamac-setup.png

data/icons/24x24/status/pamac-tray-no-update.png

data/icons/24x24/status/pamac-tray-update.png

data/icons/24x24/status/pamac-update.png

data/icons/24x24/status/pamac-wait.png

data/icons/32x32/apps/pamac-updater.png

data/icons/32x32/apps/pamac.png