Verilog good first issues

The user is reporting a high-pitched crackling sound issue specifically with the main theme music in the Toki core, while other audio tracks appear unaffected. A similar crackle is also present when flying enemies are destroyed, which is not present on the original hardware. The issue is labeled as 'help wanted'.

This issue proposes to expose several key internal metrics from the GPL (Global Placement) tool to a metrics dashboard. Currently, these metrics are only available in log files. The implementation involves adding calls to `logger_->metric()` for each relevant metric, which is described as straightforward.

This issue aims to improve the isolation of tests within the CTS (Common Test Suite) by removing dependencies on external Detailed Placement (DPL) and Global Placement (GPL) commands. The goal is to ensure that CTS tests can run independently without relying on the output of these other tools, by generating necessary DEF files internally.

This issue proposes to improve the isolation of regression tests by preventing them from unnecessarily invoking upstream tools. The suggested solution is to generate intermediate ODB or DEF files that can be directly used as input for target tool regression tests, thereby reducing maintenance overhead and test fragility.

The current RAM tests generate overly detailed LEF files with specific obstructions, which is inefficient. The issue proposes using a flag (`-bloat_occupied_layers`) to create simpler LEF files with whole-layer obstructions, reducing complexity and improving test efficiency.