feat: check for formatting errors when committing

.hooks/pre-commit

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/hook.sh"
+
+deno fmt --check

deno.json

@@ -4,6 +4,7 @@
   "tasks": {
     "start": "deno run -A src/server.ts",
     "dev": "deno run -A --watch src/server.ts",
+    "hook": "deno run --allow-read --allow-run --allow-write https://deno.land/x/deno_hooks@0.1.1/mod.ts",
     "debug": "deno run -A --inspect src/server.ts",
     "test": "DATABASE_URL=\"sqlite://:memory:\" deno test -A --junit-path=./deno-test.xml",
     "check": "deno check src/server.ts",