Add version of asset to data sent on push

This merge request adds the version value of a newly created asset to allow better handling server side.

This will help avoid creating asset with wrong versions if history data are missing.

This field will be mandatory upon next beat/beat.web> release.

See beat.web#547 (closed)

Fixes #67 (closed)

added critical enhancement labels

cc @flavio.tarsetti

Side note, this change shall be merged before the next CI run of beat/beat.web> as the field will be mandatory.

merged

mentioned in commit 1bfa7996