chore: migrate compute/metadata to Librarian (googleapis#13009)

Towards googleapis/librarian#2417

Author: jskeet

.librarian/config.yaml

@@ -8,5 +8,7 @@ libraries:
     release_blocked: true
   - id: "auth/oauth2adapt"
     release_blocked: true
+  - id: "compute/metadata"
+    release_blocked: true
   - id: "longrunning"
     release_blocked: true

.librarian/state.yaml

@@ -922,6 +922,15 @@ libraries:
     release_exclude_paths:
       - internal/generated/snippets/cloudtasks/
     tag_format: '{id}/v{version}'
+  - id: compute/metadata
+    version: 0.9.0
+    last_generated_commit: 063f9e19c5890182920980ced75828fd7c0588a5
+    apis: []
+    source_roots:
+      - compute/metadata
+    preserve_regex: []
+    remove_regex: []
+    tag_format: '{id}/v{version}'
   - id: confidentialcomputing
     version: 1.10.1
     last_generated_commit: 7b2b58ff4fb3eee3c0923af35fdee90134fabe3b

.release-please-manifest-submodules.json

@@ -11,7 +11,6 @@
     "cloudprofiler": "0.4.6",
     "commerce": "1.2.6",
     "compute": "1.48.0",
-    "compute/metadata": "0.9.0",
     "config": "1.5.1",
     "configdelivery": "0.1.1",
     "contactcenterinsights": "1.17.4",

internal/postprocessor/config.yaml

@@ -1103,6 +1103,7 @@ skip-module-scan-paths:
   # ignore the root module
   - .
   # Librarian released modules
+  - compute/metadata
   - confidentialcomputing
   - cloudtasks
   - cloudquotas

release-please-config-yoshi-submodules.json

@@ -39,9 +39,6 @@
         "compute": {
             "component": "compute"
         },
-        "compute/metadata": {
-            "component": "compute/metadata"
-        },
         "config": {
             "component": "config"
         },