Add Repo Assist agentic workflow (#4399)

Author: dbrattli

.gitattributes

@@ -72,3 +72,5 @@
 *.fs text eol=lf
 *.fsx text eol=lf
 *.fsi text eol=lf
+
+.github/workflows/*.lock.yml linguist-generated=true merge=ours

.github/aw/actions-lock.json

@@ -0,0 +1,14 @@
+{
+  "entries": {
+    "actions/github-script@v8": {
+      "repo": "actions/github-script",
+      "version": "v8",
+      "sha": "ed597411d8f924073f98dfc5c65a23a2325f34cd"
+    },
+    "github/gh-aw/actions/[email protected]": {
+      "repo": "github/gh-aw/actions/setup",
+      "version": "v0.58.1",
+      "sha": "fa061e89469ef007881d22d3af5a8c9e62363a0d"
+    }
+  }
+}