Pull out MetricsReporter lifecycle from Container

Currently, the lifecycle of many components, including the MetricsReporter is tied to the container lifecycle. Due to this, StreamProcessor/JobCoordinator will need to manage their own metrics registry and reporters.
In order to unify the stack, the ideal place for metricsReporter lifecycle will be in the user-facing apis - LocalContainerRunner & LocalApplicationRunner. Every component will simply register its metrics to the reporter dynamically. Iiuc, the MetricsReporter can implement a ReadableMetricsRegistryListener interface to register metrics dynamically.