Enhance Metrics

[DementevNikita]

Scope:

• Save history of metrics (only if the Prometheus is a target storage, PostgreSQL is excluded for now)
• Visualize metrics via plots and graphs
• Set favourite metrics within data entity to visualize them in the overview page in a smaller format
• New type of alerts that indicate metrics anomalies. Let's start with simple — users must be able to easily define a limit or value on any given metric that, once reached or surpassed, will trigger an alert