- Added the Strassen matrix multiplication algorithm for efficient matrix multiplication.
- Added strassenmatrixmultiply.go to include the new algorithm.
- Added example usage and test functions for verification.
- Introduced benchmarks for performance evaluation.

Closes TheAlgorithms#661 (if applicable)

along with the following supporting functions and test cases:

1. `AddMatrices`: Function to add two matrices.
2. `SubtractMatrices`: Function to subtract two matrices.
3. `MultiplyMatrices`: Function to multiply two matrices simply using loops.
4. `PrintMatrix`: Function to print a matrix for debugging purposes.
5. `EqualMatrix`: Function to check if two matrices are equal.
6. `StrassenMatrixMultiply` : Function to multiply two matrices using strassen algorithm

Renamed files and functions:
- addmatrices.go to add.go
- addmatrices_test.go to add_test.go
- matrixmultiply.go to multiply.go
- matrixmultiply_test.go to multiply_test.go
- subtractmatrices.go to subtract.go
- subtractmatrices_test.go to subtract_test.go
- printmatrix.go to print.go
- printmatrix_test.go to print_test.go

New files:
- breadth.go
- breadth_test.go
- checkequal.go
- checkequal_test.go
- isvalid.go
- isvalid_test.go
- length.go
- length_test.go
- samedimensions.go
- samedimensions_test.go

Modified files:
- strassenmatrixmultiply.go
- strassenmatrixmultiply_test.go

This commit includes renaming and restructuring files for clarity, adding new functionality, and removing some obsolete files.

This commit introduces a new  type, represented as a struct with methods for creating, manipulating, and performing operations on matrices. The following changes have been made:

- Added the `Matrix` struct with fields for elements, rows, and columns.
- Implemented the `New` function to create a new matrix with specified dimensions and initial values.
- Implemented the `NewFromElements` function to create a matrix from a provided 2D slice of elements.
- Added the `Get` and `Set` methods to access and modify matrix elements by row and column indices.
- Implemented the `Print` method to print the matrix to the console.
- Introduced the `SameDimensions` method to check if two matrices have the same dimensions.
- Implemented functions for matrix operations, including `Add`, `Subtract`, `Multiply`, and `CheckEqual`.
- Added a helper function `IsValid` to check if a given matrix has consistent row lengths.

These changes provide a foundation for working with matrices in Go, allowing for easy creation, manipulation, and comparison of matrices.

In this commit, the following key additions have been made to the  folder:

- Implemented `StrassenMatrixMultiply`, a fast matrix multiplication algorithm, to efficiently multiply two matrices.

- Introduced  `Copy` method to create a deep copy of a matrix, allowing for independent manipulation without affecting the original matrix.

- Implemented `Submatrix` method to extract a submatrix from an existing matrix based on specified row and column indices.

- Added `Rows` and `Columns` methods to retrieve rows and columns of matrix.

- Included comprehensive test cases to ensure the correctness and robustness of these newly implemented features.

These enhancements expand the capabilities of the  type, making it more versatile and efficient in performing matrix operations.

In this commit, the following significant changes have been made:

1. Refactored the `Matrix` type from a pointer to a value type. Using a pointer for a small structure like `Matrix` was deemed unnecessary and has been updated to enhance code simplicity.

2. Added comprehensive benchmarks to all functions. These benchmarks will help ensure that the code performs efficiently and allows for easy performance profiling.

3. Fixed code integration errors that were identified during the refactoring process.

…imensions to MatchDimensions, and remove unnecessary code

This commit updates the type variable T to constraints.Integer, providing a more specific type constraint. It also renames the SameDimensions function to MatchDimensions for clarity. Additionally, unnecessary code lines have been removed for cleaner and more optimized code.

…ly, SubMatrix, and Subtract functions

… ignoring it

…stead of causing a panic.

…an empty matrix is passed as input.

Body:
- Updated the Add,Subtract, SubMatrix, and Multiply functions in the matrix package to use the context and sync packages for goroutine management and error handling.
- Removed the use of the errgroup package in these functions.

Body:
- Updated the Add,Subtract, SubMatrix, and Multiply functions in the matrix package to use the context and sync packages for goroutine management and error handling.
- Removed the use of the errgroup package in these functions.

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