Feature/metricsreadonly

[FSchiltz]

Add readonly metric and event types for the basics and increase the id range to allow adding more default type (to prepare for more integrations with providers)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 38 lines in your changes are missing coverage. Please review.

Files	Coverage Δ
Backend/Api/Data/Models/EventType.cs	0.00% <0.00%> (ø)
Backend/Api/Data/Models/MetricType.cs	0.00% <0.00%> (ø)
Backend/Api/Models/MetricType.cs	37.50% <0.00%> (-12.50%)	⬇️
Backend/Api/Logic/EventsLogic.cs	0.00% <0.00%> (ø)
Backend/Api/Logic/MetricsLogic.cs	4.00% <0.00%> (-0.26%)	⬇️
Backend/Api/Data/EventsContext.cs	0.00% <0.00%> (ø)