June 2021

Switch OSS builds to cocoapods

Summary:
Dynamically linking grpc in the open source build is causing a lot of issues, as every time grpc releases a new versions it's likely that a previously compiled version of idb will fail.

To fix this lets build from source and then statically link grpc.

I'll need to also update the homebrew formula once this lands

Reviewed By: jbardini

Differential Revision: D28810010

fbshipit-source-id: a69676d799de1e7df0426fe5c00b4c0f4783fd7c