feat(tazjin/finito): Check in my old Rust state-machine library r/1136

I dug through my archives for this and found a version that, while
unfortunately not the latest implementation, is close enough to the
real thing to show off what Finito did.

This is a Postgres-backed state-machine library for complex
application logic. I wrote this originally for a work purpose in a
previous life, but have always wanted to apply it elsewhere, too.

git-subtree-dir: users/tazjin/finito
git-subtree-mainline: 0380841eb11f6cb200081295107fadbca928bc06
git-subtree-split: b7481172252d6f00546e94534b05d011b4105843
Change-Id: I0de02d6258568447a14870f1a533812a67127763

1 files changed, 4 insertions, 0 deletions

diff --git a/users/tazjin/finito/.gitignore b/users/tazjin/finito/.gitignore
new file mode 100644
index 000000000000..1aefdbbf6cc3
--- /dev/null
+++ b/users/tazjin/finito/.gitignore
@@ -0,0 +1,4 @@
+.envrc
+/target/
+**/*.rs.bk
+Cargo.lock