chore: improving testing and typehinting

[slowy07]

improve typehingting and testing by adding some mark to skip testing function which is take to long, example:

test_aviris.py

# uncomment marker if testing download files
@pytest.mark.skip(reason="download takes long")
def test_download_file(self):
	self.assertTrue(os.path.exists(self.filepath))

reason use this mark:

sometimes developers or contributors use bad internet connection for development, so if cannot skip or passing will be takes too long for waiting the testing

doc screenshoots:

[giswqs]

Great improvement! Thank you.

[slowy07]

thank u sir @giswqs