<!-- Please describe your changes on the following line: -->
Image Maps: (Part 1) Implemented support for parsing coord attribute to a shape object.
Implemented a hit_test method to see if a point is within the area. Tests for constructors and hit_test included
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [ ] `./mach build -d` does not report any errors
- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).
<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
… object in HTMLAreaElement
Source-Repo: https://github.com/servo/servo
Source-Revision: f6940f686cce249626e4fe32cc0fe5e0dcd40dd6
