Provide a garbage collector tests for buffer runtime functions

[paradowstack]

Until #147 is done we can provide buffer tests related to the garbage collector based on the following:
https://github.com/nodejs/node/blob/ce4a16f50ae289bf6c7834b592ca47ad4634dd79/test/node-api/test_buffer/test.js#L13

When running on React Native we can use following:
globalThis.gc()