Add JAWSM

[drogus]

I still get a lot more failures with this than I would have expected, but I'm pretty sure it's the problem with JAWSM not implementing enough to run the standard harness for most tests, cause some of the tests indeed pass

[drogus]

I think that something might be wrong with this PR, after all. I had some time to look into it yesterday and I've checked some of the failures. One thing I've noticed is that syntax error tests all fail, for example:

FAIL 1 test/annexB/language/statements/for-in/bare-initializer.js
SyntaxError: invalid variable for iterable loop at line 212, col 12

FAIL 2 test/annexB/language/statements/for-in/bare-initializer.js
SyntaxError: invalid variable for iterable loop at line 213, col 12

I don't think it's a problem with my runner, but rather with parsing the errors. I say that, cause when I changed porffor's harness to run my runner, the test passes. And it seems that it passes with SyntaxError: whatever string in the output. The problem is I don't know which part of the code to change to make it pass properly. I will probably have some time to debug later this week or over the weekend, but if someone more familiar with test262 harness knows what's the problem, I'd appreciate any pointers.

[drogus]

Ok, this was quite silly actually 😅

I haven't noticed that porffor has code that disables Node's output colouring, which could definitely result in a problem when parsing the output (and I use Node.js as the WASM runtime at the moment). The syntax tests pass without issues now :D

[drogus]

Corresponding PR in test262.fyi: test262-fyi/test262.fyi#87

[drogus]

It's much more bare bones now 😅

[linusg]

Cheers :)

Looks vaguely correct to me but I'll defer to @CanadaHonk for another review.