Add Onnx model for Autoencoder based Ecal DQM

[abhih1]

This PR adds the onnx model for the autoencoder based online Ecal DQM feature to the dedicated data repository

[cmsbuild]

A new Pull Request was created by @abhih1 (Abhirami Harilal) for branch main.

@smuzaffar, @emanueleusai, @iarspider, @ahmad3213, @cmsbuild, @jfernan2, @pbo0, @pmandrik, @ddaina, @rvenditti can you please review it and eventually sign? Thanks.
@rchatter, @simonepigazzini, @thomreis, @argiro this is something you requested to watch as well.
@perrotta, @dpiparo, @qliphy you are the release manager for this.
cms-bot commands are listed here

[jfernan2]

+1

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-0f7534/20276/summary.html
COMMIT: 3af923e
CMSSW: CMSSW_12_2_X_2021-11-05-1100/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-data/DQM-EcalMonitorClient/1/20276/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 42
• DQMHistoTests: Total histograms compared: 2901890
• DQMHistoTests: Total failures: 0
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2901868
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 41 files compared)
• Checked 177 log files, 37 edm output root files, 42 DQM output files
• TriggerResults: no differences found

[smuzaffar]

+externals
merging it so that bot can create a cmsdist PR

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next main IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @perrotta, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)