feat(tools/magrathea): bootstrap a tool for working with depot r/3286

this is going to be a serious version of //tools/depot-build.

right now it doesn't support parsing any target specs yet, so only
shells and builds for the physical project of the current folder work.

Change-Id: I4308e29da940571622ff9e539fbb8ededd27aca7
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4335
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: grfn <grfn@gws.fyi>

1 files changed, 1 insertions, 0 deletions

diff --git a/bin/mg b/bin/mg
new file mode 120000
index 000000000000..8390ec9c9652
--- /dev/null
+++ b/bin/mg
@@ -0,0 +1 @@
+__dispatch.sh
\ No newline at end of file