Move plugin out of core. (#20348)

codex-rs/Cargo.lock

@@ -1882,6 +1882,7 @@ dependencies = [
  "codex-model-provider-info",
  "codex-models-manager",
  "codex-otel",
+ "codex-plugin",
  "codex-protocol",
  "codex-rmcp-client",
  "codex-rollout",
@@ -2100,9 +2101,11 @@ dependencies = [
  "codex-app-server-protocol",
  "codex-connectors",
  "codex-core",
+ "codex-core-plugins",
  "codex-git-utils",
  "codex-login",
  "codex-model-provider",
+ "codex-plugin",
  "codex-utils-cargo-bin",
  "codex-utils-cli",
  "pretty_assertions",
@@ -2504,6 +2507,7 @@ version = "0.0.0"
 dependencies = [
  "anyhow",
  "chrono",
+ "codex-analytics",
  "codex-app-server-protocol",
  "codex-config",
  "codex-core-skills",