Standard library tests

[aykevl]

This is a draft because only a handful of packages actually pass the tests with local patches to TinyGo. Those patches should soon end up in a TinyGo PR. This PR is only ready when a reasonable number of packages pass tests: most fail right now not because the package doesn't work but rather because tinygo test is incomplete.

[dkegel-fastly]

This looks really good as is. I can enhance it after it lands.

The only nit I can see is: when a package has no tests, it should probably get an n/a rather than a yes in the "passes tests" column.

[aykevl]

Marked the PR as ready for review.

The only nit I can see is: when a package has no tests, it should probably get an n/a rather than a yes in the "passes tests" column.

Agreed. Not entirely sure how to implement this though, currently it just looks whether the tinygo test process exited with an error or not. I guess this can be implemented later.

[aykevl]

Another possible enhancement: run the tests for various platforms (Linux, wasi, cortex-m-qemu, maybe wasm or other OSes in the future). And display it in a nice table, of course.

[dkegel-fastly]

I was thinking of just exposing the tests that are enforced by CI;
"make report-stdlib-tests-pass" in
tinygo-org/tinygo#2659
generates a nice table of those vs darwin, linux, wasi, and windows.

[dkegel-fastly]

Oh, also, we might want to put an asterisk on the "passes tests" column to say that not all functions may be implemented yet... thinking of net and reflect, for instance.

[aykevl]

This is now supported.