chore : renamed files and deleted unneeded files and folders

[dinexh]

This pull request performs a comprehensive renaming of the core library from core to engine throughout the codebase. It updates all relevant import statements, documentation, and references in both the CLI and web API to ensure consistency. Additionally, it standardizes the CLI tool's name as monix-cli and updates related documentation and help output accordingly.

Core Library Renaming:

• All imports and references to core modules have been updated to use engine instead, affecting files in the CLI, API, and the main engine package. This includes modules such as analyzers, collectors, scanners, and monitoring. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14]

Documentation and Naming Consistency:

• The main documentation in README.md and module docstrings have been updated to refer to monix-engine instead of monix-core, and to clarify the separation between the engine, CLI, and web application. [1] [2] [3] [4]

CLI Tool Standardization:

• The CLI tool is now consistently referred to as monix-cli in help output, documentation, and comments. This includes updating command examples, version output, and usage instructions. [1] [2] [3] [4]

Minor Fixes and Cleanups:

• Minor whitespace and comment cleanups were made in various files. [1] [2]
• A typo in a docstring was corrected ("score" to "sengine").