[FEATURE] Add Agency-specific Public Methods

[DavidOry]

User Story

Met Council wants to compute the number of lanes using databases for a base year network

Priority

Low

Level of Effort

Low

Resolution Ideas

Add an agency-specific module/file that has public functions to do this type of thing on Network Wrangler objects.

Project

WSP and UrbanLabs commitment to the community

Who should be involved?

Implementer: @DavidOry
Commenters: @i-am-sijia
Users: @RachelWikenMC
Reviewers: @e-lo

Risk

Low. This will be a stand alone, additional functionality.

Tests

Confirm method works as expected by writing out the value counts in the test case.

[DavidOry]

@e-lo, @i-am-sijia
Please have a look at metcouncil.py and test_metcouncil.py.