* build: cache the out directory for exact deps hash matches
* chore: generate a target based depshash discriminator
* fix: hash on gn args
* build: share logic on the mac builds
* build: ensure that the mksnapshot binary is built before stripping before zipping
* build: attach the workspace on macOS
* build: optimize the macOS checkout path for testing
* build: fix mksnapshot zip generation
* build: make the mac src cache restore work
* build: v2 out cache
* build: macOS cache restore is just stupidly slow
* build: strip more binaries
* build: attach the out cache to the workspace for macOS builds
* build: allow linux boxes to restore darwin out caches
* build: cat the deps hash target file
* build: ensure that the deps target hash matches on the linux box
* build: do not use host arch in target key
* build: force undefined in the target hash file
* build: only restore out cache when it isn't in the workspace
* build: fix the macOS cache workspace trick
* build: do not double restore
* build: remove the big stuff from the out dir
* build: workaround layer issue
* build: try it back on macOS again but with smaller thingy
* build: macOS needs the out cache now
* build: clean up for omptimal macOS path
* build: use old docker image
* build: idek at this point
* build: we need a deps hash
* build: yeah we need a checkout too
* chore: use testing env on save cache job
* chore: well that should fix the cache key thing
* chore: handle cross-OS path mismatch for src cache restore
* build: use a /portal directory to transfer the src cache appropriately
* build: use the correct docker image
* build: super perms for /portal
* build: increment out cache number
* build: ensure target hash is correct for args + disable pre-compiled headers on macOS
* build: wipe the cross-arch libffmpeg before building Electron