workflows: add chatgpt ai reviewer

Adds openai models as reviewers for pull requests.

Signed-off-by: Giacomo Dematteis <giacomo.dematteis@nordicsemi.no>

Author: DematteisGiacomo

.github/workflows/openai.yaml

@@ -0,0 +1,24 @@
+name: AI Code Reviewer
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+
+permissions: write-all
+
+jobs:
+  review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+
+      - name: AI Code Reviewer
+        uses: aidar-freeed/ai-codereviewer@main
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # The GITHUB_TOKEN is there by default so you just need to keep it like it is and not necessarily need to add it as secret as it will throw an error. [More Details](https://docs.github.com/en/actions/security-guides/automatic-token-authentication#about-the-github_token-secret)
+          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
+          OPENAI_API_MODEL: "gpt-4" # Optional: defaults to "gpt-4"
+          #exclude: "**/*.json, **/*.md" # Optional: exclude patterns separated by commas