If you'd like to see outputs of a Management Pack's monitors and overrides (in addition to seeing a list of all rules), those are also easy to pull out using the Command Shell.

For monitors, you use this command: get-monitor -managementPack name.mp | export-csv filename

For example, this command gets the monitors associated with one of the core Management Packs:
get-monitor -managementPack System.Health.Library.mp | export-csv "C:\monitors.csv" 

It creates a CSV file that looks like this when opened in Excel:

For overrides: get-override -managementPack name.mp | export-csv filename

For example, this command:
get-override -managementPack Microsoft.SystemCenter.OperationsManager.Internal.mp | export-csv "c:\overrides.csv"
produces an output file that looks like this when opened in Excel:

 Note that some versions of Excel will require that you tell it that you're opening a text file.