deskutils/gnome-screenshot: Update to 3.22.0

• Add LICENSE and LICENSE_FILE
• Register missing dependencies
• Switch to USES=localbase framework
• Add NLS option
• Add INTEL_FIX option to fix garbled screenshot when 3D hardware acceleration is enabled via x11-drivers/xf86-video-intel port
• Provide more elaborate port description and add WWW line in pkg-descr

Changelog: https://gitlab.gnome.org/GNOME/gnome-screenshot/blob/master/NEWS

PR: 229061
Submitted by: cpm
Reviewed by: Ting-Wei Lan <lantw44@gmail.com>
Approved by: gnome (maintainer timeout, 2 weeks)