feat(compression): Add Burrows-Wheeler Transform (BWT) and Move-to-Front (MTF)

[Microindole]

Description

This PR adds two fundamental data transformation algorithms to the compression category. These algorithms are commonly used as pre-processing steps in modern lossless compression pipelines:

• BWT (Burrows-Wheeler Transform)
• MTF (Move-to-Front)

In line with the repository's goal, these implementations are intended for learning purposes, demonstrating key components used in formats like bzip2.

This contribution adds the following new files:

• src/main/java/com/thealgorithms/compression/BurrowsWheelerTransform.java
• src/main/java/com/thealgorithms/compression/MoveToFront.java
• src/test/java/com/thealgorithms/compression/BurrowsWheelerTransformTest.java
• src/test/java/com/thealgorithms/compression/MoveToFrontTest.java

Both implementations are accompanied by comprehensive JUnit tests to ensure correctness and handle edge cases (e.g., empty inputs, symbols not in alphabet).

Related Issue

Closes #6925

Checklist

• I have read the contribution guidelines.
• I have tested my code.
• I have added relevant tests.
• I have followed the code style of the project.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 98.70130% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 78.13%. Comparing base (48ba1ae) to head (b2d8e7c).

Files with missing lines	Patch %	Lines
...lgorithms/compression/BurrowsWheelerTransform.java	98.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6926      +/-   ##
============================================
+ Coverage     78.05%   78.13%   +0.07%     
- Complexity     6466     6496      +30     
============================================
  Files           738      740       +2     
  Lines         21585    21662      +77     
  Branches       4220     4235      +15     
============================================
+ Hits          16849    16925      +76     
+ Misses         4064     4063       -1     
- Partials        672      674       +2     

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[DenizAltunkapan]

thanks for the contribution @Microindole