Add missing .adr-dir file.
Add missing .adr-dir file.

mozmar/snippets-service,mozilla/snippets-service,glogiotatidis/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service,mozilla/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service,mozilla/snippets-service,mozilla/snippets-service,mozmar/snippets-service,glogiotatidis/snippets-service