Migrate 20 crates to monorepo gdbstub gdbstub_arch glam gpio-cdev grpcio-compiler half hex hound hyper-timeout ident_case indexmap linkme-impl mockall_derive moveit octets openssl-macros percore petgraph plotters protobuf-json-mapping Bug: http://b/339424309 Test: treehugger Change-Id: I822b3532890db8913bd1944514a642b9f9d329eb
JSON printer and parser which tries to follow protobuf conventions.