Add fire danger tool

[dchassin]

Add support for fire_danger tool to download USGS fire danger maps.

Code changes

• Add geodata/geodata_firerisk.py
• Add tools\fire_danger.py

Documentation

• Add /Utilities/Fire_danger.md

Validation

• Unit test included in geodata/geodata_firerisk.py
• Add tools/autotest/test_fire_danger.glm and `tools/autotest/test_fire_danger.tif.

[ktehranchi]

I have added the geodata_fireRisk.py package. I saw that Dave added the rasterio package to the requirements.txt document. We may need to add the pyproj package as well since I used that to transform coordinate systems.

[dchassin]

I have added the geodata_fireRisk.py package. I saw that Dave added the rasterio package to the requirements.txt document. We may need to add the pyproj package as well since I used that to transform coordinate systems.

Avoid the use of camel-case in the geodata package names. Using "geodata_firerisk.py" is ok.

[dchassin]

@ktehranchi, any thoughts on an autotest we can add to verify this works correctly?

[ktehranchi]

@ktehranchi, any thoughts on an autotest we can add to verify this works correctly?

@dchassin I wrote a unittest method already at the bottom of the geodata_firerisk.py that checks two GPS coordinates from a specific day against the true values I manually looked up. Is the Autotest different than the unit test? Should I include many more points to make the test a bit more extensive?