NASA Earthdata credentials block

[giorgiobasile]

Adds an EarthdataCredentials block that allows creating a session to NASA Earthdata through the earthaccess library.

The EarthdataCredentials.login() method sets up the necessary environment variables for the earthaccess.login() and calls it to return an earthaccess.Auth object.

The user can then use all utilities provided by earthaccess. Further work will be done to provide Prefect flows/tasks based on those.

Closes #4

Example

from prefect_eo import EarthdataCredentials
from earthaccess import search_data

ed_credentials_block = EarthdataCredentials.load("BLOCK_NAME")
ed_credentials_block.login()

# at this point, all earthaccess methods to query and download can be used
results = search_data(
    short_name='MCD12Q1',
    version="061",
    cloud_hosted=True,
    bounding_box=(-10, 20, 10, 50), 
    temporal=("2000-02", "2023-03"),
    count=100
)

Screenshots

Checklist

• References any related issue by including "Closes #" or "Closes ".
  • If no issue exists and your change is not a small fix, please create an issue first.
• Includes tests or only affects documentation.
• Passes pre-commit checks.
  • Run pre-commit install && pre-commit run --all locally for formatting and linting.
• Includes screenshots of documentation updates.
  • Run mkdocs serve view documentation locally.
• Summarizes PR's changes in CHANGELOG.md

[giorgiobasile]

Failed Windows test unrelated to prefect-eo, see PrefectHQ/prefect#10059