Genular R API Package 1.0.0

Initial Release

Implemented cells_suggest() function for retrieving cell matches based on query values.
Added cells_search() function to search for cells and retrieve associated gene data, including expression profiles.
Introduced cells_to_gene_signature() function to fetch genes associated with specific cells and filter them based on fold change thresholds.
Implemented seamless API integration with Genular, including automatic handling of query formatting, cell lineage searches, and result aggregation.
Integrated R functions for processing gene expression data, including:
- dplyr-based data transformations for filtering and summarizing results.
- tidyr-based pivoting functions to reshape data for further analysis.

Included documentation and examples for each function.
Created input validation and debugging options for all API-related functions.
Added the ability to configure API endpoints and user-specific options (e.g., timeout, API keys).
Provided support for fetching large datasets (up to 50,000 entries) through API pagination.