tinygo support, goroutine hack change, fix panic for invalid stderr, add test

[ldemailly]

Fixes #65

For tinygo (once debug.Buildinfo is fixed in tinygo-org/tinygo#4343) the issue was the linkname hacks that work for go do not exist, but there is instead a internal/task.Current that we use but convert to an id because... folks aren't convinced we need an id (even though we do...)

Also switched to letting https://github.com/kortschak/goroutine deal with maintaining the hack (adds a dependency but... oh well)

[codecov]

Codecov Report

Attention: Patch coverage is 57.14286% with 6 lines in your changes missing coverage. Please review.

Project coverage is 99.02%. Comparing base (c4c7d64) to head (086f2e4).
Report is 3 commits behind head on main.

Files	Patch %	Lines
console_logging.go	70.00%	2 Missing and 1 partial ⚠️
logger.go	0.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main      #66      +/-   ##
===========================================
- Coverage   100.00%   99.02%   -0.98%     
===========================================
  Files            4        6       +2     
  Lines          550      618      +68     
===========================================
+ Hits           550      612      +62     
- Misses           0        4       +4     
- Partials         0        2       +2     

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[ldemailly]

So I got it to link even though I have yet to get it to run with tinygo

See
dispatchrun/net#37
tinygo-org/tinygo#4345
tinygo-org/tinygo#4346

but once these merge/are resolved, this will be tinygo compatible

ps: because tinygo doesn't have stack traces the file name/line number tests do fail but it's ok