check if we can have one `integration.test.js` with snapshots for all websocket client under `websocket/test` with as less code duplication as possible

[derberg]

if you look into python/test/integration.test.js you see that once I introduced listFiles, now basically all tests are the same, and only input arguments are different. I believe we can create a helper for generating snapshots that basically accepts different templateParams and fixtures and testsResults. There is too much boilerplate code. Also investigate, maybe we should have integration tests only in websocket/test and not in separate language-based folders

[derberg]

if we abstract it properly, then our test could look like so in this PR asyncapi/community#1837 where you just provide different test cases by providing different generator options

[derberg]

@ItshMoh will work on it

[derberg]

some details in #1505 already

[ItshMoh]

I will be working on this in this week.