start adding parallel ATA stuff

lib/tb/axil_ata_tb.sv

@@ -0,0 +1,21 @@
+`include "bh_assert.sv"
+`timescale 1ns/1ps
+
+import bh_assert::bh_assert_equal;
+import bh_assert::bh_assert_stats;
+import bh_assert::bh_info;
+
+module axil_ata_tb();
+
+axil_ata dut();
+
+initial begin
+    $dumpfile("axil_ata_tb.vcd");
+    $dumpvars(0, axil_ata_tb);
+
+    #10
+    bh_assert_stats();
+    $finish;
+end
+
+endmodule