[SECONDARY FEATURE] Capture DPR Requirements

### User Story
As a student, I want to "automagically" import my DPR requirements so that I can easily identify courses that will further my degree progress.

### Technical Task:
Upon detecting if the user is on the DPR page, present an option for the user to import degree progress to the extension. Identify which classes have been taken (and if possible identify major + subplan) based on the DOM and write to DB.

### Acceptance Criteria:
- Identify if the user is on DPR
- Present option to import
- Identify and collect DOM elements

### Related Issues:
- [Frontend#8 Identify BroncoDirect Page](https://github.com/BroncoDirectMe/Frontend/issues/8)