feat(grfn/bbbg): Init

This will eventually become a signup sheet + no-show tracker for my
local board game meetup group

Change-Id: Id8d1d80d95d1e2fda5041275cff2fecfd6fa43f1

users/grfn/bbbg/shell.nix

@@ -0,0 +1,20 @@
+let
+ depot = import ../../.. {};
+in
+with depot.third_party.nixpkgs;
+
+mkShell {
+  buildInputs = [
+    arion
+    depot.third_party.clj2nix
+    clojure
+    openjdk11_headless
+    postgresql_12
+    nix-prefetch-git
+  ];
+
+  PGHOST = "localhost";
+  PGUSER = "bbbg";
+  PGDATABASE = "bbbg";
+  PGPASSWORD = "password";
+}