Add cairo_types.f90: cairo_matrix_t; Issue #2

Author: Carlos Une

src/cairo-types.f90

@@ -0,0 +1,14 @@
+module cairo_types
+use iso_c_binding, only: c_double
+implicit none
+
+type, bind(c) :: cairo_matrix_t
+    real(c_double) :: xx
+    real(c_double) :: yx
+    real(c_double) :: xy
+    real(c_double) :: yy
+    real(c_double) :: x0
+    real(c_double) :: y0
+end type
+
+end module