[SIGMON-510] create a second testing environment based on pyproject requirements

Context

• To make sure that sigmon's libraries work both on SWAN and locally, we want to have 2 testing jobs in the CI.

What was done

• Add a test in the CI using pip install .

TODO

• ?

QA

• code was not unit tested
• acceptance tests were written

Review objectives

• assessment of code functionality
• assessment of code quality