[cmc] Add support for services in dictionaries

Change-Id: Ie4e76cb4e66652537531c0621dc287e97dccf19a
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1235224
Commit-Queue: Suraj Malhotra <[email protected]>
Reviewed-by: Claire Gonyeo <[email protected]>

Author: surajrmal

tools/lib/cml/src/validate.rs

@@ -988,9 +988,9 @@ which is almost certainly a mistake: {}",
                                 | CapabilityId::Dictionary(_)
                                 | CapabilityId::Runner(_)
                                 | CapabilityId::Resolver(_)
+                                | CapabilityId::Service(_)
                                 | CapabilityId::Configuration(_) => {}
                                 CapabilityId::Directory(_)
-                                | CapabilityId::Service(_)
                                 | CapabilityId::Storage(_)
                                 | CapabilityId::EventStream(_) => {
                                     let type_name = id.type_str();