enable workflows, codeowners

Author: anindith123

.github/solutionid_validator.sh

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+#!/bin/sh 
+#set -e 
+
+echo "checking solution id $1"
+echo "grep -nr --exclude-dir='.github' "$1" ./.."
+result=$(grep -nr --exclude-dir='.github' "$1" ./..)
+if [ $? -eq 0 ]
+then
+  echo "Solution ID $1 found\n"
+  echo "$result"
+  exit 0
+else
+  echo "Solution ID $1 not found"
+  exit 1
+fi
+
+export result

.github/workflows/maintainer_workflows.yml

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+# Workflows managed by aws-solutions-library-samples maintainers
+name: Maintainer Workflows
+on:
+  # Triggers the workflow on push or pull request events but only for the "main" branch
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+    types: [opened, reopened, edited]
+
+jobs:
+  CheckSolutionId:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run solutionid validator
+        run: |
+          chmod u+x ./.github/solutionid_validator.sh
+          ./.github/solutionid_validator.sh ${{ vars.SOLUTIONID }}

CODEOWNERS

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+CODEOWNERS @aws-solutions-library-samples/maintainers
+/.github/workflows/maintainer_workflows.yml @aws-solutions-library-samples/maintainers
+/.github/solutionid_validator.sh @aws-solutions-library-samples/maintainers