feat: permissions (#168)

- Load `app-permissions` from schema exported by `@octokit/openapi`
- Update documentation in README.md
- Implement the `permissions_*` inputs in the action code

---------

Co-authored-by: Parker Brown <17183625+parkerbxyz@users.noreply.github.com>

lib/request.js

@@ -17,7 +17,7 @@ const proxyUrl =
 const proxyFetch = (url, options) => {
   const urlHost = new URL(url).hostname;
   const noProxy = (process.env.no_proxy || process.env.NO_PROXY || "").split(
-    ","
+    ",",
   );
 
   if (!noProxy.includes(urlHost)) {