chore: migrate first-time contributor welcome to agentic workflow

Author: Junnygram

.gitattributes

@@ -1,2 +1,4 @@
 /.yarn/releases/** binary
-/.yarn/plugins/** binary
+/.yarn/plugins/** binary
+
+.github/workflows/*.lock.yml linguist-generated=true merge=ours

.github/aw/actions-lock.json

@@ -0,0 +1,14 @@
+{
+  "entries": {
+    "actions/github-script@v9": {
+      "repo": "actions/github-script",
+      "version": "v9",
+      "sha": "3a2844b7e9c422d3c10d287c895573f7108da1b3"
+    },
+    "github/gh-aw-actions/setup@v0.71.1": {
+      "repo": "github/gh-aw-actions/setup",
+      "version": "v0.71.1",
+      "sha": "239aec45b78c8799417efdd5bc6d8cc036629ec1"
+    }
+  }
+}

.github/config.yml

@@ -1,29 +1,3 @@
-#-------------------------------------------------------------------------------
-# Configuration for new-issue-welcome - https://github.com/behaviorbot/new-issue-welcome
- # Comment to be posted to on first time issues
-newIssueWelcomeComment: >
-   Thanks for opening this issue. A contributor will be by to give feedback soon. In the meantime, please review the [Layer5 Community Welcome Guide](https://docs.google.com/document/d/17OPtDE_rdnPQxmk2Kauhm3GwXF1R5dZ3Cj8qZLKdo5E/edit?usp=sharing) and sure to join the [community Slack](http://slack.layer5.io/).
- # Configuration for new-pr-welcome - https://github.com/behaviorbot/new-pr-welcome
- # Comment to be posted to on PRs from first time contributors in your repository
-newPRWelcomeComment: >
-   Yay, your first pull request! :thumbsup: A contributor will be by to give feedback soon. In the meantime, please review the [Layer5 Community Welcome Guide](https://docs.google.com/document/d/17OPtDE_rdnPQxmk2Kauhm3GwXF1R5dZ3Cj8qZLKdo5E/edit?usp=sharing) and sure to join the [community Slack](http://slack.layer5.io/).
-
-   Be sure to double-check that you have signed your commits. Here are instructions for [making signing an implicit activity while peforming a commit](../CONTRIBUTING.md#signing-off-on-commits-developer-certificate-of-origin).
-
-
-#-------------------------------------------------------------------------------
-# Configuration for first-pr-merge - https://github.com/behaviorbot/first-pr-merge
-# Comment to be posted to on pull requests merged by a first time user
-firstPRMergeComment: >
-     	   	    	    	 Thank you for contributing to the Layer5 community! :tada:
-  \
-  \
-  ![Congrats!](https://github.com/layer5io/layer5/blob/master/.github/welcome/Layer5-celebration.png)
-  \
-  \
-    	   	    	    	 :star: Please leave a [star on the project](../stargazers). :smile:
-
-
 #-------------------------------------------------------------------------------
 # Configuration for request-info - https://github.com/behaviorbot/request-info
 # Comment to reply with