Add "Samarkand" voting template

[zamrokk]

MOTIVATION: propose other ways for user for creating polls

DETAILED DESIGN:

Implement other templates. Propose theses new template when creating a voting session and modify the way results are displayed

• Samarkand : https://hackmd.io/EBB3pObiT5y5eJs4tPQjXQ?view#15-Samarkand

DRAWBACKS: some impacts on display and new smart contract templates to create. Big question : how to deal with old templates ? Normally, we should have no impact as these is new smart contracts. Just dapp and devops should be impacted