chore: migrate root module to Librarian (#13025)

Author: jskeet

.librarian/config.yaml

@@ -1,5 +1,16 @@
 # Hand-maintained configuration for libraries.
-#
+
+# The "global" file here is really only for the root module.
+# We don't want to add a source path of "." to the state file,
+# as that would include everything that's *not* in the module
+# as well. The root module includes a source path of "internal"
+# despite several subdirectories being tools which don't need
+# to be releasesd as such; those are listed as released exclusion
+# paths in state.yaml.
+global_files_allowlist:
+  - path: "CHANGES.md"
+    permissions: "read-write"
+
 # All libraries with handwritten code (core, hybrid and handwritten)
 # libraries have "release_blocked: true" so that releases are
 # explicitly initiated
@@ -18,3 +29,5 @@ libraries:
     release_blocked: true
   - id: "pubsublite"
     release_blocked: true
+  - id: "root-module"
+    release_blocked: true

.librarian/state.yaml

@@ -3961,6 +3961,37 @@ libraries:
     release_exclude_paths:
       - internal/generated/snippets/retail/
     tag_format: '{id}/v{version}'
+  - id: root-module
+    version: 0.123.0
+    last_generated_commit: 3990e05b25dcaf7ba8d6baa4255d9b012a3a6a4f
+    apis: []
+    source_roots:
+      - civil
+      - httpreplay
+      - internal
+      - rpcreplay
+    preserve_regex: []
+    remove_regex: []
+    release_exclude_paths:
+      - internal/actions
+      - internal/aliasfix
+      - internal/aliasgen
+      - internal/carver
+      - internal/examples
+      - internal/gapicgen
+      - internal/generated
+      - internal/godocfx
+      - internal/kokoro
+      - internal/leakcheck
+      - internal/librariangen
+      - internal/postprocessor
+      - internal/pretty
+      - internal/protoveneer
+      - internal/stategen
+      - internal/testutil
+      - internal/tracecontext
+      - internal/version
+    tag_format: 'v{version}'
   - id: run
     version: 1.12.1
     last_generated_commit: a32b926f35bf473f7ba31383e5247175beccd576

.release-please-manifest.json

@@ -1,3 +1,2 @@
 {
-  ".": "0.123.0"
-}
+}

internal/version.go

@@ -3,9 +3,6 @@
   "separate-pull-requests": true,
   "include-component-in-tag": false,
   "packages": {
-    ".": {
-      "component": "main"
-    }
   },
   "plugins": ["sentence-case"]
 }