Add necessary files to enable AI commit feature - .example.env, .gitignore, README.md, aicommit.mjs.

aicommit.mjs

@@ -0,0 +1,9 @@
+#!/usr/bin/env zx
+
+let { OPENAI_API_KEY } = await fs.readJson("./.env.json");
+
+let diff = await $`git diff --cached`;
+
+// echo("Current branch is", branch);
+// console.log(branch);
+echo(diff);