refactor: refactor RTL paths and update test descriptions

- Updated RTL paths in various files to remove the 'ribp' prefix, reflecting the new directory structure.
- Modified test descriptions to remove version indicators (e.g., V2, V3) for clarity and consistency.
- Adjusted file references in scripts and tests to align with the new peripheral and multimedia directory structure.
- Added a new test to ensure repository layout invariants, confirming the absence of deprecated paths.

tests/test_xpi_io.py

@@ -35,13 +35,13 @@ def test_xpi_releases_data_pads_while_receiving(tmp_path: Path) -> None:
             [
                 "+define+SV_ASSRT_DISABLE",
                 f"+incdir+{generated / 'rtl'}",
-                f"+incdir+{ROOT / 'rtl/ip/ribp/storage'}",
+                f"+incdir+{ROOT / 'rtl/ip/storage'}",
                 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/ribp/storage/xpi.sv"),
-                str(ROOT / "rtl/ip/ribp/storage/xpi_clkgen.sv"),
-                str(ROOT / "rtl/ip/ribp/storage/xpi_core.sv"),
+                str(ROOT / "rtl/ip/storage/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"),
                 "",
             ]