[FEATURE] Add `[run_id]` column to `[inputs].[special_mgras]`

[Eric-Liu-SANDAG]

Is your feature request related to a problem? Please describe

Currently, [inputs].[special_mgras] is created with the assumption that all Estimates runs will use the exact same set of special MGRAs. As a result, the table has no [run_id] column. This assumption is suspect, as I anticipate adding additional MGRAs relating the college areas or senior facilities. If more MGRAs are added, then we need some way to associate different sets of special MGRA with different runs for documentation purposes.

Describe the solution you'd like

Of course, the obvious way to do so is to add a [run_id] column. That way, different runs can use different sets of special MGRAs. Then, [inputs].[special_mgras] would be created for each [run_id] when the startup module was run

Describe alternatives you've considered

N/A

Additional context

This is actually already reflected in the wiki, as an output table of the Startup module