* fix(examples): exit program if load_param, load_model failed for clear error messsage
* ignore .cache dir for clangd
* check non-zero instead of -1 for load functions
* Add yolov4 example option.
Add yolov4-tiny for benchmark.
* Restyled by astyle
* Restyled by clang-format
* Restyled by astyle
Co-authored-by: Restyled.io <commits@restyled.io>