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_ws2812.py

@@ -100,7 +100,7 @@ def test_ws2812_accepts_dma_fixed_destination_backpressure(tmp_path: Path) -> No
                 str(ROOT / "rtl/mini/top/rib_if.sv"),
                 str(common / "utils/register.sv"),
                 str(common / "utils/fifo.sv"),
-                str(ROOT / "rtl/ip/peripheral/dma.sv"),
+                str(ROOT / "rtl/ip/peripheral/ribp_dma.sv"),
                 str(ROOT / "rtl/ip/peripheral/dma_core.sv"),
                 str(serial / "ws2812_if.sv"),
                 str(serial / "ws2812_reg.sv"),