OpenSSL component will be discontinued in ESP-IDF v5.x. The only official TLS API will be esp-tls
Add docs warning about deprecation in v5.x
Removed all examples demonstrating usage of openssl in IDF
* 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