Add a CHANGELOG and changelog_verifier.yml workflow (opensearch-project#2247)

* Add a CHANGELOG and changelog_verifier.yml workflow

Signed-off-by: Craig Perkins <cwperx@amazon.com>

* Refer to correct repo

Signed-off-by: Craig Perkins <cwperx@amazon.com>

* Add CHANGELOG.md

Signed-off-by: Craig Perkins <cwperx@amazon.com>

* Reduce events that workflow is triggered on

Signed-off-by: Craig Perkins <cwperx@amazon.com>

---------

Signed-off-by: Craig Perkins <cwperx@amazon.com>

Author: cwperks

.github/workflows/changelog_verifier.yml

@@ -0,0 +1,18 @@
+name: "Changelog Verifier"
+on:
+  pull_request:
+    types: [opened, edited, reopened]
+
+jobs:
+  # Enforces the update of a changelog file on every pull request
+  verify-changelog:
+    if: github.repository == 'opensearch-project/security-dashboards-plugin'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          ref: ${{ github.event.pull_request.head.sha }}
+      - uses: dangoslen/changelog-enforcer@v3
+        with:
+          skipLabels: "autocut, skip-changelog"

CHANGELOG.md

@@ -0,0 +1,23 @@
+# CHANGELOG
+All notable changes to this project are documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to the [Semantic Versioning](https://semver.org/spec/v2.0.0.html). See the [CONTRIBUTING guide](./CONTRIBUTING.md#Changelog) for instructions on how to add changelog entries.
+
+## [Unreleased 3.x]
+### Added
+
+### Changed
+- Changes to prevent page reload on entering invalid current password and to disable reset button when current or new password is empty ([#2238](https://github.com/opensearch-project/security-dashboards-plugin/pull/2238))
+
+### Dependencies
+- Bump dev dependencies to resolve CVE-2024-52798 ([#2231](https://github.com/opensearch-project/security-dashboards-plugin/pull/2231))
+
+### Deprecated
+
+### Removed
+
+### Fixed
+
+### Security
+
+[Unreleased 3.x]: https://github.com/opensearch-project/security-dashboards-plugin/compare/3.0...main