Feature Request: Update shared_utils after mart_transit_database changes

[tiffanychu90]

Where does your feature apply?
Select from the below, and be sure to affix the appropriate label to this issue (e.g. dataset, jupyterhub, metabase, analysis.calitp.org)

• Data (the warehouse)
• JupyterHub
• Metabase
• analysis.calitp.org
• Other shared_utils update

Is your feature request related to a problem? Please describe.

• Several columns used in schedule_rt_utils for creating our crosswalks are changing Deprecate various columns in the Transit Database Mart Tables data-infra#3525

Describe the solution you'd like

• References to caltrans_district from dim_organizations should point to new mart_transit_database tables: dim_county_geography and bridge_organizations_x_headquarters_county_geography
• We're keeping most of the columns intact in dim_organizations, but want to source caltrans_district from the other 2 tables
  • caltrans_district is broken up into 2 columns in the tables: caltrans_district and caltrans_district_name, and we want to combine those so the values hold the format of existing value 07 - Los Angeles