CI: Factor out .install-rkorapclient to allow remote use

Change-Id: Iddbd787290529649824c2912a28a6f4ebf99a20e
diff --git a/.github/workflows/check-standard.yaml b/.github/workflows/check-standard.yaml
index 4d95490..d6394eb 100644
--- a/.github/workflows/check-standard.yaml
+++ b/.github/workflows/check-standard.yaml
@@ -5,6 +5,8 @@
     branches: [main, master]
     paths-ignore:
       - '**.md'
+      - 'gitlab-ci.yml'
+      - 'ci/**'
   pull_request:
     branches: [main, master]
     paths-ignore: