This pull request introduces a new "wizard mode" to the application, enabling users to interactively generate plots through a guided CLI interface. It also includes utility enhancements and modifications to the main application logic to support this feature. Below are the most significant changes:

Wizard Mode Implementation:

• Added a new module wizard with the wizard_mode function, which provides an interactive CLI for users to select BAM/FASTA files, specify regions, and configure plot settings. It utilizes the inquire library for prompts.
• Integrated wizard_mode into the main function in src/main.rs, allowing the application to detect when no arguments are passed and switch to wizard mode.

Dependency Updates:

• Added the inquire crate (version 0.7.5) to Cargo.toml to enable interactive CLI prompts.

Enhancements to Plot Output:

• Updated the main function to save plot outputs (HTML or Vega-Lite JSON) with filenames derived from the input BAM file when using wizard mode. This ensures clear output file naming. [1] [2]

Utility Functions:

• Introduced a new utility function get_fasta_contigs in src/utils.rs to extract contig/chromosome names from a FASTA file, which is used in wizard mode for user selection.
• Added a unit test for get_fasta_contigs to validate its functionality.

Codebase Modifications:

• Updated imports in src/main.rs and src/utils.rs to include the new wizard module and utility function. [1] [2]