Add rocshmem to labeler (#2724)

.github/labeler.yml

@@ -70,6 +70,10 @@
 - changed-files:
   - any-glob-to-any-file: 'projects/rocr-runtime/**/*'
 
+"project: rocshmem":
+- changed-files:
+  - any-glob-to-any-file: 'projects/rocshmem/**/*'
+
 "project: roctracer":
 - changed-files:
   - any-glob-to-any-file: 'projects/roctracer/**/*'