For some reason after use modified context save routine, the local unit test
app were crashed, the reason behind this resides on setjmp usage of test_runner,
since this feature seems to not be used for nothing special (just was a default config),
I changed the unity_config to replace the setjmp macros, this sounds less hacky.
New unity component can be used for testing other applications.
Upstream version of Unity is included as a submodule.
Utilities specific to ESP-IDF unit tests (partitions, leak checking
setup/teardown functions, etc) are kept only in unit-test-app.
Kconfig options are added to allow disabling certain Unity features.
