* changing dependencies from unity->cmock
* added component.mk and Makefile.projbuild
* ignore test dir in gen_esp_err_to_name.py
* added some brief introduction of CMock in IDF
fix the bug following:
1. after disable bluetooth controller, wifi cannot TX/RX any packets.
2. when software coexist working, there's a little ratio cause wifi task watchdog timeout
3. when software coexist working, there's a little ratio cause bluetooth cannot receive anything.
feature:
1. add libbtdm_app.a git commit local and remote checking
Known issues:
1. there's still a bug occurs with a very very low ratio cause bluetooth
cannot receive anything. The reproduce interval may great than 3days ~ 1week via
7x24 hours heavy testing.
1. Add the 100 times test when the private key is generated by the random number;
2. Add the bt components to the unit-test-app/config directory.
3. Added the bt unit test case to CI.
