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: I2749b1b33f8a996c1062884b4a4d5e7f97116b46