chore: add per-widget/integration CODEOWNERS generator

Derive owners from git history per feature folder and keep entries in sync
via a bot workflow on dev, following common monorepo automation patterns.

scripts/codeowners-overrides.json

@@ -0,0 +1,11 @@
+{
+  "meierschlumpf@gmail.com": "manuel-rw",
+  "thomas@ajnart.fr": "ajnart",
+  "omariqbal97@gmail.com": "omariqbal",
+  "kyle.grieder@gmail.com": "kylegrieder",
+  "oupsman@oupsman.fr": "Oupsman",
+  "pitschi@posteo.de": "pitschi",
+  "github@xela.codes": "itzTheMeow",
+  "febrile42@gmail.com": "febrile42",
+  "nanewman01@gmail.com": "NicolasNewman"
+}