Add Project Euler problem 116 solution 1 (#6305)

* Add solution

* updating DIRECTORY.md

* Fix pre-commit

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: John Law <johnlaw.po@gmail.com>

matrix/inverse_of_matrix.py

@@ -29,7 +29,8 @@ def inverse_of_matrix(matrix: list[list[float]]) -> list[list[float]]:
 
     D = Decimal  # An abbreviation for conciseness
 
-    # Check if the provided matrix has 2 rows and 2 columns, since this implementation only works for 2x2 matrices
+    # Check if the provided matrix has 2 rows and 2 columns
+    # since this implementation only works for 2x2 matrices
     if len(matrix) != 2 or len(matrix[0]) != 2 or len(matrix[1]) != 2:
         raise ValueError("Please provide a matrix of size 2x2.")