Malware protection 6: Malware integration

[mallexxx]

Task/Issue URL: https://app.asana.com/0/481882893211075/1208033567421351/f
BSK PR: duckduckgo/BrowserServicesKit#1099

Description:

• add .malware threat and special page types

Optional E2E tests:

• Run PIR E2E tests
  Check this to run the Personal Information Removal end to end tests. If updating CCF, or any PIR related code, tick this.

Steps to test this PR:
0.1. Check out https://github.com/duckduckgo/content-scope-scripts/tree/pr-releases/pr-1268 and npm install; npm run build; add reference to the project
0.2. Check out https://github.com/duckduckgo/privacy-dashboard/tree/pr-releases/pr-250 and npm install; npm run build; add reference to the project

• or use the Review build

1. Validate http://privacy-test-pages.site/security/badware/malware.html detects malware
2. Validate http://privacy-test-pages.site/security/badware/phishing.html detects phishing
3. Validate Privacy Dashboard displaying status on overridden navigation
4. Validate Help/Report links (not ready yet)

Definition of Done:

• Does this PR satisfy our Definition of Done?

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Internal references:

Pull Request Review Checklist
Software Engineering Expectations
Technical Design Template
Pull Request Documentation