feat(L01): add number systems and storage card

src/tasks/task01_positional_encoding.sv

@@ -0,0 +1,12 @@
+module positional_encoding(
+  input  logic [7:0] value,
+  output logic [7:0] bits,
+  output logic [3:0] hex_high,
+  output logic [3:0] hex_low,
+  output logic [8:0] weighted_sum
+);
+  assign bits = value;
+  assign hex_high = value[7:4];
+  assign hex_low = value[3:0];
+  assign weighted_sum = {1'b0, value};
+endmodule