ci: isolate site and CLI releases into separate PRs (#1497)

- Enable separate-pull-requests in release-please config
- Add exclude-paths for site on root package
- Align site/package.json version to 1.0.0 to match manifest

Author: marcossevilla

.release-please-config.json

@@ -10,14 +10,18 @@
   "pull-request-header": ":rotating_light: There are changes ready for release :rocket:\n\nℹ Merge this PR once the team confirms the release is ready.\n",
   "pull-request-title-pattern": "chore: ${version}",
   "include-component-in-tag": false,
+  "separate-pull-requests": true,
   "extra-files": [
     "lib/src/version.dart"
   ],
   "packages": {
     ".": {
       "release-type": "dart",
       "changelog-path": "CHANGELOG.md",
-      "version-file": "pubspec.yaml"
+      "version-file": "pubspec.yaml",
+      "exclude-paths": [
+        "site"
+      ]
     },
     "site": {
       "release-type": "node",

site/package.json

@@ -1,6 +1,6 @@
 {
   "name": "site",
-  "version": "0.0.0",
+  "version": "1.0.0",
   "private": true,
   "scripts": {
     "docusaurus": "docusaurus",