docs: Add python basics notebooks

Added three notebooks that covers the following topics:

1. Part 1: Mastering Python Datatypes, Data Structures and Operators

   • Variables
   • Data Types
   • Data Structures
   • Operators
   • Strings and String Manipulation
   • Numbers (Integers, Floats)
   • Type Conversion
   • Input and Output
   • Comments and Documentation

2. Part 2: Understading conditionals, loops and iterators

   • Conditional Statements (if, elif, else)
   • Loops (for, while)
   • Control Statement(Pass, Break, Continue)
   • Iteratives (iterators, iterables)
   • Exception and Error Handling (try, except, finally)
   • Nested Loops and Conditions

3. Part 3: Introduction to functional and object oriented programming

   • Functions
   • Definition of Functions
   • Function Arguments and Return Values
   • Scope of Variables (Global vs Local)
   • Variable-length Arguments (*args, **kwargs)
   • Lambda Functions
   • Decorators (Conceptual Understanding)
   • Generators (Conceptual Understanding)