feat(matrix3): Initialize few basic functions

include/math/matrix3.h

@@ -0,0 +1,19 @@
+#ifndef MATRIX_H
+#define MATRIX_H
+
+typedef struct {
+    float m[9];
+} Mat3;
+
+Mat3 mat3(float arr[9]);
+Mat3 mat3Zro();
+Mat3 mat3Ity();
+
+Mat3 mat3Add(Mat3 m1, Mat3 m2);
+Mat3 mat3Sub(Mat3 m1, Mat3 m2);
+Mat3 mat3Scl(Mat3 m, float scalar);
+Mat3 mat3Mul(Mat3 m1, Mat3 m2);
+Mat3 mat3Tpo(Mat3 m);
+float mat3Det(Mat3 m);
+
+#endif // MATRIX_H