Refactor codebase and adopt common conventions of open source Python projects

[soaressgabriel]

Checklist

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Added tests for changed code.
• Updated documentation for changed code.

Description

• Removed "TODO" markers from the codebase;
• Removed unnecessary variable declarations;
• Reorganized model definition class methods;
• Renamed variables, methods and functions using snake_case and meaningful names;
• Renamed classes using meaningful names;
• Added typehints where absent;
• Formatted source code files;
• Reimplemented tss2csv and removed Pandas dependency;
• Simplified source code where possible;
• Removed unused source code and its respective tests (when they existed);
• Removed unused test data;
• Updated test data and their respective integration tests;
• Added raster and CSV file equality utility functions for integration tests;

Related Issue

• Resolve Refactor codebase and adopt common conventions of open source Python projects #116;
• Resolve Remove Pandas dependency #169;

Motivation and context

• See Refactor codebase and adopt common conventions of open source Python projects #116.

How has this been tested

• Manual testing was performed by executing RUBEM with provided sample dataset and verifying the output against expected results;
• Automated tests (unit and integration), including CLI integration tests added in this branch, must pass without exception.

Screenshots

• N/A

[LINAMARIAOSORIO]

LGTM