feat: Add support for SKY130 OpenRAM SRAM integration

- Introduced  to handle the preparation of the SKY130 OpenRAM SRAM views.
- Updated  to download and prepare the SRAM archive during PDK setup.
- Enhanced OpenSTA and Yosys configurations to accommodate SRAM macro integration.
- Added Verilog simulation models for GF180 and SKY130 SRAM macros.
- Implemented tests for SRAM setup and validation, ensuring correct integration and functionality.
- Updated various Makefiles and scripts to support SRAM size and macro configurations.

tests/rtl/tc_sram_1024x32_tb.sv

@@ -53,10 +53,32 @@ module tc_sram_1024x32_tb;
     end
   endtask
 
+  task automatic expect_read_hold(input logic [9:0] idle_address, input logic [31:0] expected);
+    begin
+      @(negedge clk_i);
+      cs_i   = 1'b0;
+      addr_i = idle_address;
+      @(posedge clk_i);
+      @(negedge clk_i);
+      if (data_o !== expected) begin
+        $fatal(1, "1024x32 SRAM held data=%08x expected=%08x", data_o, expected);
+      end
+    end
+  endtask
+
   initial begin
+    write_word(10'h000, 32'hCAFE_BABE, 4'hF);
     write_word(10'h155, 32'h1122_3344, 4'hF);
     write_word(10'h155, 32'hAABB_CCDD, 4'b0101);
+    write_word(10'h1FF, 32'h0102_0304, 4'hF);
+    write_word(10'h200, 32'h1122_3344, 4'hF);
+    write_word(10'h3FF, 32'hA5A5_5A5A, 4'hF);
+    read_word(10'h000, 32'hCAFE_BABE);
     read_word(10'h155, 32'h11BB_33DD);
+    read_word(10'h1FF, 32'h0102_0304);
+    expect_read_hold(10'h200, 32'h0102_0304);
+    read_word(10'h200, 32'h1122_3344);
+    read_word(10'h3FF, 32'hA5A5_5A5A);
     $display("1024x32 SRAM wrapper test passed");
     $finish;
   end