Earth Engine Authentication on Streamlit through Google Cloud Service Account

[IndigoWizard]

Main PR gist

This PR addresses the authentication issue of Earth Engine with geemap in Streamlit on Streamlit Cloud. The issue was raised in response to the indefinite authentication loop observed when using the geemap.ee_initialize() method in the deployed Streamlit app. The proposed solution is to modify the Earth Engine initialization process based on the presence of Google Cloud Service Account information through a json key in Streamlit Secrets and drop the geemap method.

Issue ticket

• Issue #32

Type of change

Check relevant options relevant to this PR:

• [ ] New feature (non-breaking change which adds functionality)
• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] Enhancement (maintenance, updating code structure, cleaning up code)
• [ ] This change requires a documentation update

Changes description

• Bug Fix: Resolved the authentication issue by modifying the Earth Engine initialization process in the ee_initialize function to use the Google Cloud Service Account method with a json key instead of the geemap method (depracated now).
• Enhancement: Simplified and improved the Earth Engine initialization logic, ensuring it seamlessly works both locally and on Streamlit Cloud.

Checklist

• [x] I have tested these changes locally.
• [x] I have checked the code to ensure it follows the project's coding standards.
• [ ] I have updated the documentation (if applicable).
• [ ] I have added or modified unit tests (if applicable).
• [ ] All existing tests pass successfully.