socket_forward_proxy_[host_]ports to launch_cvd

launch_cvd will pass 5555 as the guest port, and a biased host port that
is bumped in increments of 2, (5555, 5557, 5559, ...).

I also needed to split strings in a few spots. I made the interface
match the most simple version of abseil::StrSplit in case we ever manage
to get those string utilities.

BUG: 73011528
Change-Id: Iba0dea36a45789b629d8c73e581a8d05021ef892
8 files changed
tree: f9ad31192f80c7b978b0d8d155a4302be0408874
  1. common/
  2. guest/
  3. host/
  4. tools/
  5. Android.bp
  6. Android.mk
  7. OWNERS