Add sync label workflow

Author: xavierfoucrier

.github/labels.yml

@@ -0,0 +1,42 @@
+- name: bug
+  description: bug to fix
+  color: fbca04
+- name: community
+  description: regarding the project community or sponsors
+  color: 4654f2
+- name: core
+  description: core code structure or architecture
+  color: 00209a
+- name: critical
+  description: critical failure to fix as soon as possible
+  color: d93f0b
+- name: dependencies
+  description: update/upgrade one or more dependency
+  color: 0366d6
+- name: design
+  description: design request
+  color: ea4c88
+- name: documentation
+  description: regarding the project documentation
+  color: 27d19b
+- name: feature
+  description: feature request to implement
+  color: 1d76db
+- name: help
+  description: need help, any contribution are welcome
+  color: 5319e7
+- name: motion
+  description: motion request
+  color: 32deca
+- name: optimization
+  description: optimization request
+  color: 128a0c
+- name: post-it
+  description: reminder or todo
+  color: fcf49c
+- name: support
+  description: regarding the environment or target platform
+  color: f1f1f1
+- name: wontfix
+  description: negligible issue or that will never be fixed
+  color: 444444

.github/workflows/sync-labels.yml

@@ -0,0 +1,21 @@
+# Github workflow to automatically sync labels in a declarative way
+# https://github.com/micnncim/action-label-syncer
+
+name: Sync labels
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - .github/labels.yml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: micnncim/action-label-syncer@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          manifest: .github/labels.yml