Merge branch '192_client_signing_execution' into 'master'

192 client signing execution

A least.

*HUGE PR* (+1000/-100) and the review will take time.

Included
---

+ Sequence analysis (Axel)
+ *Naive* signature sequence execution
+ Persist result to file in JSON

Still pending (reported to another story?)
----

+ ~~Persist evidences after completion to a file~~
+ Check for connection security (cert) here and there
+ Better error management
+ Benchmarks 😄 

See merge request !45
4 jobs for master
Status Job ID Name Coverage
  Test
passed #1358
golang lint
Code lint

00:10:17

passed #1357
golang mongo goqt
Integration tests

00:03:25

passed #1356
golang mongo strong
Unit tests

00:02:50

 
  Deploy
passed #1359
golang strong goqt deploy
Deploy

00:18:35