support Inficon gauges

this improves ethercat compatibility by actually setting the correct PDO size and other minor details.

added 4 commits

• 25dc7ad7 - actually pre-operational is good enough
• c1c660ec - set pdo size to its actual value
• 339207a6 - support inficon gauges
• 719e8db1 - drop package if future is already done

Compare with previous version

added 12 commits

• 719e8db1...b5da59e5 - 5 commits from branch master
• 41f9a82a - add support for a Leybold TurboVac
• 7b478244 - put terminal into operational later
• 6a0364ab - always have a current_data in a sync group
• 76d828b5 - actually pre-operational is good enough
• 14b218e0 - set pdo size to its actual value
• bfea5580 - support inficon gauges
• 56d754f8 - drop package if future is already done

Compare with previous version

added 7 commits

• 51d84a66 - put terminal into operational later
• 686bad53 - always have a current_data in a sync group
• 1b7c3d37 - actually pre-operational is good enough
• 3e1f3c7b - set pdo size to its actual value
• 5701001a - support inficon gauges
• f9f61267 - drop package if future is already done
• fc3b1ace - allow running ebpf XDP on the network driver

Compare with previous version

added 6 commits

• 24902237 - put terminal into operational later
• 6f28a8a4 - always have a current_data in a sync group
• 0016a8ae - actually pre-operational is good enough
• 9b17a629 - set pdo size to its actual value
• 9d91a882 - support inficon gauges
• 9ba0a261 - drop package if future is already done

Compare with previous version

merged

mentioned in commit 8f931e34

mentioned in commit 1ff9e978