[CI] Add label commenter workflow

.github/label-commenter-config.yml

@@ -0,0 +1,32 @@
+comment:
+  footer: "\
+    ---\n\n
+    >   	   	    	    	 Be sure to [join the community](http://slack.layer5.io), if you haven't yet and please leave a :star: [star on the project](../stargazers) :smile:
+    "
+
+labels:
+  - name: issue/design required
+    labeled:
+      issue:
+        body: This issue has been labeled with 'design-required'. Note that prior to commencing on implementation, a design specification needs to be created and reviewed for approval. See [Creating a Functional Specification](https://docs.google.com/document/d/1RP3IWLc-MiQS-QYasqCoVuCH7--G87p5ezE5f_nOzB8/edit?usp=sharing) to create a design spec.
+        action: open
+  - name: issue/remind
+    labeled:
+      issue:
+        body: Checking in... it has been awhile since we've heard from you on this issue. Are you still working on it? Please let us know and please don't hesitate to contact a [MeshMate](https://layer5.io/community/meshmates/) or any other [community member](https://layer5.io/community/members) for assistance.
+        action: open
+      pr:
+        body: Checking in... it has been awhile since we've heard from you on this issue. Are you still working on it? Please let us know and please don't hesitate to contact a [MeshMate](https://layer5.io/community/meshmates/) or any other [community member](https://layer5.io/community/members) for assistance.
+        action: open
+  - name: issue/dco
+    labeled:
+      issue:
+        body: "🚨 Alert! Git Police! We couldn’t help but notice that one or more of your commits is missing a sign-off. _A what?_ A commit sign-off (your email address).\n\n
+         To amend the commits in this PR with your signoff using the instructions provided in the DCO check above. \n\n
+         To configure your dev environment to automatically signoff on your commits in the future, see [these instructions](/~https://github.com/meshery/meshery/blob/master/CONTRIBUTING.md#signing-off-on-commits-developer-certificate-of-origin)."
+        action: open
+      pr:
+        body: "🚨 Alert! Git Police! We couldn’t help but notice that one or more of your commits is missing a sign-off. _A what?_ A commit sign-off (your email address).\n\n
+         To amend the commits in this PR with your signoff using the instructions provided in the DCO check above. \n\n
+         To configure your dev environment to automatically signoff on your commits in the future, see [these instructions](/~https://github.com/meshery/meshery/blob/master/CONTRIBUTING.md#signing-off-on-commits-developer-certificate-of-origin)."
+        action: open

.github/workflows/label-commenter.yml

@@ -0,0 +1,27 @@
+name: Label Commenter
+
+on:
+  issues:
+    types:
+      - labeled
+
+  pull_request_target:
+    types:
+      - labeled
+
+permissions:
+  contents: read
+  issues: write
+  pull-requests: write
+
+jobs:
+  comment:
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          ref: master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Label Commenter
+        uses: peaceiris/actions-label-commenter@v1