refactor: refactor RTL style checker and update test cases

- Enhanced the RTL style checker script to include new diagnostic rules for function declarations, primary design units, and synthesis exclusions.
- Added functions to handle audit issues, ensuring that the audit records match the current inventory of RTL files.
- Updated test cases to reflect changes in RTL file names and paths, ensuring consistency with the new naming conventions.
- Introduced additional tests for style violations, including mismatched primary design units and synthesizable initial blocks.
- Adjusted file paths in various test files to align with the new RTL structure and naming conventions.

tests/test_xpi_io.py

@@ -39,7 +39,7 @@ def test_xpi_releases_data_pads_while_receiving(tmp_path: Path) -> None:
                 f"+incdir+{ROOT / 'rtl/managed/clusterip/common/rtl'}",
                 str(ROOT / "rtl/managed/clusterip/common/rtl/interface/ribp_if.sv"),
                 str(ROOT / "rtl/managed/clusterip/common/rtl/utils/register.sv"),
-                str(ROOT / "rtl/ip/storage/xpi.sv"),
+                str(ROOT / "rtl/ip/storage/ribp_xpi.sv"),
                 str(ROOT / "rtl/ip/storage/xpi_clkgen.sv"),
                 str(ROOT / "rtl/ip/storage/xpi_core.sv"),
                 str(ROOT / "tests/rtl/xpi_io_tb.sv"),