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.
Fixed problem with multiple mount/unmount for different devices.
Additional check for structure length included into the code.
Remove useless spaces.
Added initialization for reserved memory.
WL version 2 mark used sectors as 16 bytes block of bytes with CRC.
This changes required because old version did not worked with encryption.
Additional unit tests are implemented.
