complete validation and tests for CreateRollCall data

[Kaz-ookid]

addressing #1751 : Now complete validation for CreateRollCalldata.

[github-actions[bot]]

Pull reviewers stats

Stats of the last 30 days for popstellar:		User	Total reviews	Time to review	Total comments
	K1li4nL 🥇	22 ▀▀▀▀	3d 30m)) ▀	14 ▀▀
	arnauds5 🥈	6 ▀	7h))	4 ▀
	matteosz 🥉	6 ▀	3d 16h 27m)) ▀	19 ▀▀▀
	emonnin-epfl	5 ▀	8h 20m))	8 ▀
	onsriahi14	3 ▀	1d 10h 51m))	4 ▀
	1florentin	2	10d 5h 50m)) ▀▀▀	0
	sgueissa	2	12h 56m))	5 ▀
	MariemBaccari	2	22h 39m))	6 ▀
	simone-kalbermatter	2	5h 32m))	0
	quadcopterman	2	10d 1h 21m)) ▀▀▀	0

^{⚡️ Pull request stats}

[github-actions[bot]]

🟠 There seems to be some formatting issues that must be applied from PR https://github.com/dedis/popstellar/pull/1953 first.

[github-actions[bot]]

🟠 There seems to be some formatting issues that must be applied from PR https://github.com/dedis/popstellar/pull/1953 first.

[github-actions[bot]]

🟠 There seems to be some formatting issues that must be applied from PR https://github.com/dedis/popstellar/pull/1953 first.

[github-actions[bot]]

🟠 There seems to be some formatting issues that must be applied from PR https://github.com/dedis/popstellar/pull/1953 first.

[sonarcloud[bot]]

Quality Gate passed for 'PoP - PoPCHA-Web-Client'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarcloud[bot]]

Quality Gate passed for 'PoP - Be2-Scala'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarcloud[bot]]

Quality Gate passed for 'PoP - Be1-Go'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarcloud[bot]]

Quality Gate passed for 'PoP - Fe2-Android'

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
89.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud