Feature/genesis

[finger563]

Description

NOTE: this PR is a WIP. Right now the emulator works well and runs at 60 fps if I disable sound emulation, but enabling sound emulation drops that to 1/10th or 1/20th speed :/

Motivation and Context

Genesis is awesome, and sonic has some excellent music. Also, BLAST processing.

How has this been tested?

• Building and running on Box-3, testing various genesis roms.

Screenshots (if appropriate, e.g. schematic, board, console logs, lab pictures):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation Update
• [ ] Hardware (schematic, board, system design) change
• [x] Software change

Checklist:

• [ ] My change requires a change to the documentation.
• [ ] I have added / updated the documentation related to this change via either README or WIKI

Software

• [ ] I have added tests to cover my changes.
• [ ] I have updated the .github/workflows/build.yml file to add my new test to the automated cloud build github action.
• [x] All new and existing tests passed.
• [x] My code follows the code style of this project.

[github-actions[bot]]

:white_check_mark:Static analysis result - no issues found! :white_check_mark: