chore: add GitHub Action workflow to close issues after merging to "next" (#1115)

Author: latin-panda

.github/workflows/close-issues.yml

@@ -0,0 +1,46 @@
+name: Close Issues on PR Merge to Next
+
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  close_issues:
+    if: github.event.pull_request.merged == true && github.event.pull_request.base.ref == 'next'
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: read
+
+    steps:
+      - name: Parse and close linked issues
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const body = context.payload.pull_request.body || "";
+            const closedIssues = new Set();
+            const issueRegex = /(Closes|Fixes|Resolves)\s*:?\s+#(\d+)/gi;
+            let match;
+            
+            while ((match = issueRegex.exec(body)) !== null) {
+              const issueNumber = Number(match[2]);
+              if (!closedIssues.has(issueNumber)) {
+                closedIssues.add(issueNumber);
+                try {
+                  await github.rest.issues.update({
+                    owner: context.repo.owner,
+                    repo: context.repo.repo,
+                    issue_number: issueNumber,
+                    state: 'closed'
+                  });
+                  console.log(`Closed issue #${issueNumber}`);
+                } catch (e) {
+                  console.error(`Could not automatically close issue #${issueNumber}. Skipping issue.`);
+                }
+              }
+            }
+
+            if (closedIssues.size === 0) {
+              console.log("No issues found to close.");
+            }