Add pre-commit, pre-push hooks formally

.hooks/link.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+hooks=(
+    "pre-commit"
+    "pre-push"
+)
+
+for hook in "${hooks[@]}"; do
+    chmod +x .hooks/$hook.sh
+    ln -s -f ../../.hooks/$hook.sh .git/hooks/$hook
+done