meta: add feature request label for issue template

PR-URL: #40970
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

.github/ISSUE_TEMPLATE/2-feature-request.md

@@ -1,7 +1,7 @@
 ---
 name: "\U0001F680 Feature request"
 about: Suggest an idea for this project
-
+labels: feature request
 ---
 
 <!--