FEATURE: Overhaul of admin API key system (#8284)

- Allow revoking keys without deleting them
- Auto-revoke keys after a period of no use (default 6 months)
- Allow multiple keys per user
- Allow attaching a description to each key, for easier auditing
- Log changes to keys in the staff action log
- Move all key management to one place, and improve the UI

app/assets/javascripts/admin/adapters/api-key.js.es6

@@ -0,0 +1,11 @@
+import RESTAdapter from "discourse/adapters/rest";
+
+export default RESTAdapter.extend({
+  basePath() {
+    return "/admin/api/";
+  },
+
+  apiNameFor() {
+    return "key";
+  }
+});