check in pre-push git hook so I don't lose it

contrib/git-hook-pre-push.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+#
+# pre-push hook for git
+# this script is probably overkill for most contributors
+#
+# "i use this to prevent foot cannons caused by commiting broken code"
+#
+# ~ jeff (lokinet author and crazy person)
+#
+#
+# to use this as a git hook do this in the root of the repo:
+#
+# cp contrib/git-hook-pre-push.sh .git/hooks/pre-push
+#
+
+
+set -e
+
+cd "$(dirname $0)/../.."
+echo "check format..."
+./contrib/format.sh verify
+echo "format is gucci af fam"
+
+echo "remove old test build directory..."
+rm -rf build-git-hook
+mkdir build-git-hook
+echo "configuring test build jizz..."
+cmake -S . -B build-git-hook -DWITH_LTO=OFF -DWITH_HIVE=ON -G Ninja
+echo "ensure this shit compiles..."
+ninja -C build-git-hook all
+echo "ensure unit tests aren't fucked..."
+ninja -C build-git-hook check
+
+echo "we gud UmU"
+echo ""