feat(matrix): implement matrix functions

Startcode/matrix.h

@@ -3,9 +3,14 @@
 
 #define UNDEFINED_MATRIX_VALUE 0
 
-typedef float MatrixType;
+typedef float MatrixType; //sets the datatype of the matrix
 
-// TODO Matrixtyp definieren
+typedef struct
+{
+    MatrixType *buffer;
+    unsigned int rows;
+    unsigned int cols;
+} Matrix;
 
 
 Matrix createMatrix(unsigned int rows, unsigned int cols);