ci: changesets migration (#14695)

Author: soberm

.changeset/README.md

@@ -0,0 +1,8 @@
+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
+with multi-package repos, or single-package repos to help you version and publish your code. You can
+find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in
+[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

.changeset/config.json

@@ -0,0 +1,21 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@3.1.2/schema.json",
+  "changelog": [
+    "@changesets/changelog-github",
+    { "repo": "aws-amplify/amplify-js" }
+  ],
+  "snapshot": {
+      "useCalculatedVersion": true
+  },
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "public",
+  "baseBranch": "main",
+  "updateInternalDependencies": "patch",
+  "ignore": [
+    "@aws-amplify/react-native-example",
+    "@aws-amplify/rtn-passkeys-example",
+    "tsc-compliance-test"
+  ]
+}

.github/actions/has-changesets/action.yml

@@ -0,0 +1,18 @@
+name: 'Has Changesets'
+description: 'Checks if `.changeset` directory has valid changesets'
+outputs:
+  has-changesets:
+    description: "Whether `.changeset` directory has at least one changeset"
+    value: ${{ steps.check-changesets.outputs.has-changesets }}
+runs:
+  using: "composite"
+  steps:
+    - name: Check .changeset folder for changesets
+      id: check-changesets
+      shell: bash
+      run: |
+        if (find .changeset -type f -name '*.md' ! -name 'README.md' | grep -q .) ; then
+            echo "has-changesets=true" >> $GITHUB_OUTPUT
+        else
+            echo "has-changesets=false" >> $GITHUB_OUTPUT
+        fi

.github/changeset-presets/bump-all-packages.md

@@ -0,0 +1,24 @@
+---
+'@aws-amplify/core': patch
+'@aws-amplify/auth': patch
+'@aws-amplify/analytics': patch
+'@aws-amplify/api': patch
+'@aws-amplify/api-graphql': patch
+'@aws-amplify/api-rest': patch
+'@aws-amplify/datastore': patch
+'@aws-amplify/datastore-storage-adapter': patch
+'@aws-amplify/geo': patch
+'@aws-amplify/interactions': patch
+'@aws-amplify/notifications': patch
+'@aws-amplify/predictions': patch
+'@aws-amplify/pubsub': patch
+'@aws-amplify/storage': patch
+'@aws-amplify/adapter-nextjs': patch
+'@aws-amplify/react-native': patch
+'@aws-amplify/rtn-push-notification': patch
+'@aws-amplify/rtn-web-browser': patch
+'@aws-amplify/rtn-passkeys': patch
+'aws-amplify': patch
+---
+
+Unstable release - version bump for all public packages