modisfast 2.0.1

Improvements and fixes

Added Earthdata token authentication to CMR requests to resolve HTTP 401 errors encountered in some environments.
Normalized file paths during cloud to fix path-matching issues, particularly on Windows.
mf_import_data() now accepts the download root folder and locates the files for the requested collection. A clearer error lists matching folders when several ROIs are available.
Improved URL-building progress messages.
Improved parallel download error messages to suggest retrying with parallel = FALSE, and ensured workers are stopped when a download fails.

mf_get_url() now uses NASA Earthdata Cloud for supported MODIS and VIIRS collections. GPM data continue to use the GES DISC OPeNDAP service (#21, #23, #24).
Authentication now uses an Earthdata bearer token set in EARTHDATA_TOKEN. Username and password authentication and mf_login() have been removed.
The opt_param, single_netcdf, and output_format arguments have been removed.

Added support for tiled VIIRS .002 collections available through Earthdata Cloud.
Added mf_list_collections_cloud() to check whether sampled granules from supported cloud collections can be accessed through OPeNDAP. Results describe the granules tested; they do not guarantee access to every date or tile.
Updated mf_list_variables() to retrieve available bands from the current MODIS, VIIRS, and GPM OPeNDAP services.
mf_get_url() uses the package’s collection catalogue to identify cloud collections and creates subset URLs for the requested area, dates, and bands.

Updated mf_import_data() to assemble cloud granules across tiles and dates, restore their spatial coordinates, and retain band names and acquisition dates in imported terra::SpatRaster objects.
Improved validation and error messages for collection names, band names, dates, ROIs, missing tokens, and granules that cannot be accessed through OPeNDAP.
Updated the documentation and examples for the new authentication and download workflow.

adding unit tests to test the functionality of the package (see file test/testthat.R) (#11, #15).
mf_modisfast() : new function which enables to execute the whole workflow (login, get URL, download data, and eventually import data) at a glance.

mf_get_url() and mf_download_data() : including information on maximum file size expected (when verbose).
mf_import_data() : default projection now set to source projection of the data.
mf_import_data() : collection_source renamed collection.
solving an issue with tile merging at extreme latitude.
slight modifications in the Contributing.md file (#8).
slight modifications in the vignettes (#13)
improve comments in verbose mode

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