Port over industry analysis by URL visit

[wei2912]

This was previously done in the following:

• https://github.com/AdvisorySG/mentorship-da/blob/main/04URLsInPostgreSQL/analysis%20of%20the%20sql%20data.ipynb
• https://github.com/AdvisorySG/mentorship-da/blob/main/03AnalysisApplicationData/main.ipynb (for mentee application data)

...but the code is pretty old.

TODOs:

• Count how many people with Industry X selected are switching to Industry Y, treating visit_id individually.
  • A switch is defined as removing Industry X and adding Industry Y to query parameters, ignoring all other changes.
  • E.g., if a user selects Industry A/B/C then navigates to Industry B/D, the user has switched A->D and C->D.
• Association rule mining (note that order of industries doesn't matter for us)
  • This might be complex - check in first before spending too much time :P

See sample DuckDB SQL in #48. Some postprocessing of the arguments will be required to properly handle the indices (e.g. filters[0][value], filters[1][value] which order doesn't matter to us).

[linear]

DT-46 Port over industry analysis

[wei2912]

Unassigning since @fallendynasty will be away for a while.