ci(devops): 👷 add synching of files (#4)

## Description

Adding synching capabilities.

## Reviewer Focus

This PR needs a quick review.

.github/sync.yml

@@ -0,0 +1,19 @@
+group:
+  # All repositories
+  - files:
+      - source: .github/workflows/assign-pr-to-creator.yml
+        dest: .github/workflows/assign-pr-to-creator.yml
+    repos: |
+      rostools/cog-flow-intro
+      rostools/r-pkg-intro
+      rostools/r-cubed-intro
+      rostools/r-cubed-intermediate
+      rostools/r-cubed-advanced
+      rostools/rostools
+      rostools/r3
+      rostools/r3admin
+      rostools/r-cubed
+      rostools/r3-theme
+      rostools/admin
+      rostools/prodigenr
+

.github/workflows/sync-files.yml

@@ -0,0 +1,25 @@
+name: Sync files across repos
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@main
+
+      - name: Run GitHub File Sync
+        uses: BetaHuhn/repo-file-sync-action@v1
+        with:
+          GH_PAT: ${{ secrets.SYNC_PAT }}
+          ASSIGNEES: lwjohnst86
+          IS_FINE_GRAINED: true
+          GIT_USERNAME: lwjohnst86
+          GIT_EMAIL: lwjohnst@gmail.com
+          COMMIT_PREFIX: "chore(sync): :hammer: "
+          BRANCH_PREFIX: chore
+