Fix Issue #83: Added support for different delimiters

[dangrant6]

Command-line Argument for Custom Delimiter:

Added --delimiter option to specify custom delimiters (e.g., npm start YourFileName --delimiter=;) Implemented parsing of this new command-line argument in the parseArguments function.

Delimiter Auto-detection:

Implemented detectDelimiter function to automatically identify the delimiter used in CSV files if not provided.

Updated ReadME to explain the new custom delimiter feature and auto-detection capability. Code handles comma, semicolon, colon, pipe, and tab delimiters.