CMake: add uninstall target

* fix rmdir error

OSS-Fuzz: build with $CXX

ossfuzz.sh: fix permission bits

Add libFuzzer fuzz target / OSS-Fuzz integration

allow to override PIC_FLAGS and compiler std

fix bug: add const to the parameter in the cJSON_GetStringValue function

Add const qualifier to cJSON_CreateStringArray

CMake: Improve install target

initialize variables in print_number

Adds a const qualifier to the strings in the array to avoid discarding
it from arguments.

Fix typos in REAM.md file

Revert "Replace strcpy with strncpy, sprintf with snprintf"

Replace strcpy with strncpy, sprintf with snprintf

Add a comment to the parameter count of the cJSON_CreateIntArray function

Fixed 1 missing dependency in Makefile

eliminate warning when compiling cJSON

Correct typo error in cJSON.h

add comment for cJSON_Minify function

Fix typos.