threaded test_suite_runner.c3 (#2642)

* threaded test_suite_runner.c3

- Added a simple threadpool
- Fixed the status line updates
- Implemented the #skip for tests
- Added ansi color to the final status line

It works as one expects reducing the total runner time by the allocated
number of threads.

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* fix thread_number and a test

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* added choice of "--thread [N]" or defaults to os::num_cpu()

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* added unique explicit --build-dir to the compiler

and also print the c3c command line for debugging

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* disable "run compiler tests" for msvc-debug build

it takes like 1:30hs

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* buffer printouts and correct ordering of tests

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* added progress bar

- removed some \r carrier return stuff

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* Fix bug in fixed pool. Improve progress bar

* Add color to bar.

* Some renaming.

* fix some leaky leaks

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* each test output is printed immediately

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>

* Formatting, remove comment. Re-enable MSVC debug test.

---------

Signed-off-by: Manuel Barrio Linares <mbarriolinares@gmail.com>
Co-authored-by: Christoffer Lerno <christoffer@aegik.com>

releasenotes.md

@@ -28,6 +28,7 @@
 - Unit tests allocating too much `tmem` without `@pool` would cause errors in unrelated tests. #2654
 - Incorrect rounding for decimals in formatter in some cases. #2657
 - Incorrectly using LLVMStructType when emitting dynamic functions on MachO #2666  
+- FixedThreadPool join did not work correctly.
 
 ### Stdlib changes
 - Add `ThreadPool` join function to wait for all threads to finish in the pool without destroying the threads.