Is your feature request related to a problem? Please describe.
Currently audio module source files are a bit spread around the codebase. Clean up the codebase to so that all key files and definitions for a module are in a single place.

Describe the solution you'd like

1. Per module directory which contains its own headers, Kconfig and CMakefile.

2. Any metadata should be in this folder (.e.g IPC4 toml file sections to describe the cycle budgets)

3. A README.MD that describes module features, capabilities and performance.

cc:

• [FEATURE][Zephyr] Remove duplication of CMake rules between Zephyr and XTOS #8260
• [FEATURE] remove duplicated C files additions in CMake rules for src/audio/ modules #8606