feat: codeowners-analysis action

.changeset/orange-hairs-march.md

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+---
+"codeowners-review-analysis": minor
+---
+
+initial commit

actions/codeowners-review-analysis/README.md

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+# Codeowners Analysis
+
+Analyzes changed files for a given PR, and displays current CODEOWNER
+requirements.
+
+## Acknowledgement
+
+The CODEOWNERS parsing contained in this repo was translated from:
+https://github.com/hmarr/codeowners
+
+## Usage
+
+### Inputs
+
+| input          | description                                                                   | default |
+| -------------- | ----------------------------------------------------------------------------- | ------- |
+| `post-comment` | Whether to post a small comment on the PR summarizing codeowners requirements | `true`  |
+
+### Example Workflow
+
+```yaml
+name: Codeowners Analysis Test
+on:
+  workflow_dispatch:
+  pull_request:
+    paths:
+      - .github/workflows/codeowners-analysis.yml
+jobs:
+  analyze-changes:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read # needed to read codeowners file
+      pull-requests: read # needed to comment on PRs
+      actions: read # needed to get summary url
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 1
+      - name: Run Codeowners Analysis
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        uses: smartcontractkit/.github/actions/codeowners-review-analysis@<tag>
+```
+
+## Development
+
+### Generated Types
+
+See [src/generated/README.md](./src/generated/README.md) for more details.
+
+### Local Testing
+
+From the root of the `.github` repository, you can run
+`./actions/codeowners-review-analysis/scripts/test.sh` to run tests.
+
+- Update both `test.sh` and `payload.json` for your test case

actions/codeowners-review-analysis/action.yml

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+name: codeowners-review-analysis
+description:
+  "Analyzes changed files for a given PR, and displays codeowners required based
+  on paths."
+
+runs:
+  using: "node20"
+  main: "dist/index.js"
+
+inputs:
+  post-comment:
+    description:
+      "Whether to post a comment on the PR with the analysis results."
+    required: false
+    default: "true"

actions/codeowners-review-analysis/codegen.json

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+{
+  "schema": "./node_modules/@octokit/graphql-schema/schema.graphql",
+  "generates": {
+    "./src/generated/graphql.ts": {
+      "plugins": ["typescript", "typescript-operations"]
+    }
+  }
+}