Added CHANGELOG.md (#4581)

* update

* update

* add name

* update

Author: rusty1s

.github/workflows/changelog.yml

@@ -0,0 +1,13 @@
+name: Changelog Enforcer
+
+on:  # yamllint disable-line rule:truthy
+  pull_request:
+
+jobs:
+
+  changelog:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dangoslen/changelog-enforcer@v3

CHANGELOG.md

@@ -0,0 +1,10 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
+
+## [2.0.5] - 2022-MM-DD
+### Added
+- Added `CHANGELOG.md` ([#4581](https://github.com/pyg-team/pytorch_geometric/pull/4581))
+### Changed
+### Removed