split out basic suite tests with refs to new core suite

test/core/unpacked_array_depth.v

@@ -0,0 +1,18 @@
+module example(
+    input wire [7:0] inp,
+    output wire [7:0] out
+);
+    assign out = ~inp;
+endmodule
+
+module top;
+    reg [7:0] arr1 [1:0];
+    reg [7:0] arr2 [1:0][1:0];
+    wire [7:0] out1, out2;
+    example e1(arr1[0], out1);
+    example e2(arr2[0][0], out2);
+    initial begin
+        #1 arr1[0] = 8'hAD;
+        #1 arr2[0][0] = 8'h42;
+    end
+endmodule