[FFL-1273] bindings for libdatadog datadog ffe api#5001

sameerank wants to merge 8 commits intomasterDataDog/dd-trace-rb:masterfrom

sameerank/FFL-1273-Bindings-for-libdatadog-datadog-ffe-APIDataDog/dd-trace-rb:sameerank/FFL-1273-Bindings-for-libdatadog-datadog-ffe-APICopy head branch name to clipboard