…nt and function table

…hm handling

- Replace KMAC-specific structures with a unified SP800-185 context.
- Rename KMAC error class for consistency.
- Enhance squeeze and digest methods to utilize the new context structure.

- Change expected error type from SHA3::Digest::DigestError to SHA3::Digest::Error in SHAKE tests.
- Rename TEST_VECTORS to KMAC_TEST_VECTORS for clarity and update error handling for invalid algorithms to raise ArgumentError.

… enhance examples

- Added cSHAKE128 and cSHAKE256 functions to the documentation.
- Improved examples for SHAKE and KMAC functions.
- Updated Gemfile version to 2.2 and clarified breaking changes.

…support

- Introduced launch.json for debugging configurations.
- Created tasks.json for build tasks using clang.