Adding cartoee module to geemap

[KMarkert]

PR to merge functionality from cartoee into geemap as a module. Users will need to explicitly import module (i.e. from geemap import catoee) to prevent users from having to install cartoee dependencies without use. Module checks for installed dependencies on import and installs if not available for ease of use.

Added files:

• geemap/cartoee.py: cartoee module to create publication quality figures with EE data
• examples/notebooks/cartoee_quickstart.ipynb: quickstart notebook highlighting basic functionality and use of the module
• examples/notebooks/cartoee_projections.ipynb: notebook highlighting different map types and result projection caveats when using cartoee

[KMarkert]

Should be noted that install messages are based on logging. So if logging level is not set, nothing will be printed. To get information on checking dependencies one would need to set logging level to INFO.

Here is an example with expected output:

In [1]: import logging
In [2]: logging.basicConfig(level=logging.INFO)
In [3]: from geemap import cartoee
INFO:root:All dependencies are successfully imported/installed!

[giswqs]

Worked like a charm. Thanks a lot for your contribution! #157