Create auto-assign-assignees-as-reviewers.yml (duckduckgo#2963)

* Create auto-assign-assignees-as-reviewers.yml

* Don't stringify

* Simplify

* Add assigned flow

Author: jonathanKingston

.github/workflows/auto-assign-assignees-as-reviewers.yml

@@ -0,0 +1,38 @@
+name: Auto Assign Assignees as Reviewers
+
+on:
+    pull_request:
+        types: [opened, ready_for_review, reopened, synchronize, assigned, unassigned]
+
+jobs:
+    assign-and-request-review:
+        runs-on: ubuntu-latest
+
+        permissions:
+            pull-requests: write
+
+        steps:
+            - name: Checkout repo
+              uses: actions/checkout@v3
+
+            - name: Get PR details
+              id: pr
+              uses: actions/github-script@v7
+              with:
+                  script: |
+                      const pr = await github.rest.pulls.get({
+                        owner: context.repo.owner,
+                        repo: context.repo.repo,
+                        pull_number: context.payload.pull_request.number,
+                      });
+
+                      const assignees = pr.data.assignees.map(a => a.login)
+
+                      if (assignees.length > 0) {
+                        await github.rest.pulls.requestReviewers({
+                          owner: context.repo.owner,
+                          repo: context.repo.repo,
+                          pull_number: context.payload.pull_request.number,
+                          reviewers: assignees
+                        });
+                      }