chore(linux): Add more details to Sentry events

This change adds additional details to Sentry events so that the "All
Events" tab on keyman.sentry.io will show helpful values in the
"device" and "os" columns instead of emptry strings.

linux/keyman-config/keyman_config/sentry_handling.py

@@ -134,6 +134,15 @@ def _sentry_sdk_initialize(self):
             scope.set_tag("platform", platform.platform())
             scope.set_tag("system", platform.system())
             scope.set_tag("tier", __tier__)
+            scope.set_tag("device", platform.node())
+            try:
+                os_release = platform.freedesktop_os_release()
+                scope.set_tag('os', os_release['PRETTY_NAME'])
+                scope.set_tag('os.name', os_release['NAME'])
+                if 'VERSION' in os_release:
+                    scope.set_tag('os.version', os_release['VERSION'])
+            except OSError as e:
+                logging.debug(f'System does not have os_release file: {e.strerror}')
         logging.info("Initialized Sentry error reporting")
 
     def _raven_initialize(self):