Initial data commit

Task/Euler-method/Ada/euler-method-1.ada

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+generic
+   type Number is digits <>;
+package Euler is
+   type Waveform is array (Integer range <>) of Number;
+   function Solve
+            (  F      : not null access function (T, Y : Number) return Number;
+               Y0     : Number;
+               T0, T1 : Number;
+               N      : Positive
+            )  return Waveform;
+end Euler;