[Work in progress] Pcrafi post processor

[olivierdalang]

WORK IN PROGRESS - DO NOT MERGE

What does it fix?

• Ticket: #
• Funded by: GA & SPC
• Implemented by: Marco & Olivier
• Description:
  • This adds a new postprocessor that assigns damage state to structures based on flood depths. It is though to work with buildings from the PCRAFI dataset used in the Pacific. It includes a vulnerability function (draft), a report element and a specific hazard classification.

Checklist:

• Commit messages are descriptive and explain the rationale for changes
• Add to the changelog in metadata.txt if it's a new feature
• Unit test for new code added
• Request someone to review or test your PR

[olivierdalang]

As written in the description, the vulnerability function included is just a draft, so the PR isn't meant to be merged yet, but meant to show what we're up to here at SPC.