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_rib.py

@@ -49,7 +49,7 @@ def test_bus_preserves_incr4_and_rejects_illegal_bursts(tmp_path: Path) -> None:
                 str(ROOT / "rtl/mini/top/rib2ribp.sv"),
                 str(ROOT / "rtl/mini/top/rib_error_slave.sv"),
                 str(ROOT / "rtl/mini/top/rib2ram.sv"),
-                str(ROOT / "rtl/mini/top/bus.sv"),
+                str(ROOT / "rtl/mini/top/rib_bus.sv"),
                 str(ROOT / "tests/rtl/rib_bus_tb.sv"),
                 "",
             ]