Scons builder for cython extensions (#2485)

* complie boardd without python

* not good, but don't want to lose the file, because it works

* clean a bit

* update dbc

* should build on CI

* not good, but don't want to lose the file, because it works

* clean a bit

* should build on CI

* remove unneeded path

* reorder paths

* reduce diff

* and now it works?!

* ... should work in CI

* add kj, 30% chance to fix macos

* pydebug

* new way to find path

* fix :)

* tested

* sanity check

* repl. MacOS flags

* hope it works

* need more logs

* need more logs2

* test if it works

* should work on CI

* correct python file

* should not work

* cleanup

* real cleanup

* more removals

* 50% of file

* transformations

* fixed a hardcoded variable

* more logs

* simpl.

* kalman

* all donw if it passes tests

* cleanup

* reduce code by 20 lines if this works

* fix bugs

* cleanup

* SharedLibrary

* cleanup

* ...

* remove unused

* CI fix maybe?

* add more valid path

* more logs

* ...:

* fix webcam CI

* remove WError flag

* deprecated is not an error

* more Wno things

* reduce diff, add Wno to env

* don't import nonexistent stuff

* SharedLibrary v2

* less custom env

* renaming, remove SharedLibs

* pack libs in envCython

* experiment

* better docker caching

* whitespace

* more docker caching

* improvement

* improvements

Co-authored-by: Adeeb Shihadeh <adeebshihadeh@gmail.com>
old-commit-hash: 9529764549

common/SConscript

@@ -1,14 +1,4 @@
-Import('env', 'cython_dependencies')
+Import('envCython')
 
-# Build cython clock module
-env.Command(['common_pyx.so', 'clock.cpp'],
-            cython_dependencies + ['common_pyx_setup.py', 'clock.pyx'],
-            "cd common && python3 common_pyx_setup.py build_ext --inplace")
-
-# Build cython params module
-env.Command(['params_pyx.so', 'params_pyx.cpp'],
-            cython_dependencies + [
-                'params_pyx_setup.py', 'params_pyx.pyx', 'params_pxd.pxd',
-                '#selfdrive/common/params.cc', '#selfdrive/common/params.h',
-                '#selfdrive/common/util.c', '#selfdrive/common/util.h'],
-            "cd common && python3 params_pyx_setup.py build_ext --inplace")
+envCython.Program('clock.so', 'clock.pyx')
+envCython.Program('params_pyx.so', 'params_pyx.pyx')