Aggiunge action codex-reply e workflow @codex

.gitea/workflows/codex.yml

@@ -0,0 +1,27 @@
+name: Codex Reply
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  codex:
+    runs-on: linux_amd64
+    if: |
+      contains(github.event.comment.body, '@codex') &&
+      github.event.comment.user.login != 'anuti'
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ./install-opencode
+
+      - uses: ./codex-reply
+        with:
+          issue-number: ${{ github.event.issue.number }}
+          repository: ${{ github.repository }}
+          comment-body: ${{ github.event.comment.body }}
+          comment-author: ${{ github.event.comment.user.login }}
+          issue-title: ${{ github.event.issue.title }}
+          issue-body: ${{ github.event.issue.body }}
+          api-token: ${{ secrets.TOKEN }}
+          api-key: ${{ secrets.OPENCODE_API_KEY }}