Feat : create default parameter on round creation

data/test.db

internal/models/models.go

internal/models/parameters.go

internal/models/round.go

internal/models/vote.go

internal/rootmux/admin_test.go

internal/rootmux/capturer_test.go

internal/rootmux/rootmux_test.go

internal/rootmux/visualizer_test.go

web/components/help/management-help.js

web/components/management/rounds-card.js

web/components/visualization/results-general.js

web/components/visualization/results-zone.js

web/components/visualization/visualization-section.js

web/components/vote/votes.js

web/services/model/round-model.js