Create an empty centroids in Hazard.concat() with CRS from the first haz_list.

[manniepmkam]

Changes proposed in this PR:

This pull request is a fix for issue #879.

An empty centroids is created in the Hazard.concat() function with the crs from the haz object from the haz_list.

This PR fixes #

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• [x] Read the Contribution Guide
• [x] Correct target branch selected (if unsure, select develop)
• [x] Descriptive pull request title added
• [x] Source branch up-to-date with target branch
• [ ] Documentation updated
• [x] Tests updated
• [x] Tests passing
• [ ] No new linter issues
• [ ] Changelog updated

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[emanuel-schmid]

Very well! Can you add tests and changelog?

[manniepmkam]

@manniepmkam, as discussed in person, please

• fix the linter issue: Line too long

I have updated the line.

• add a unit test that covers the case reported in Issues with CRS when using TropCyclone.from_tracks() #879 (comment)

The unit test for hazard.base has been updated accordingly. Please review that.

[peanutfun]

@manniepmkam Thanks a lot for the bugfix! 🙌