Create Release notes templates

Created templates for PS/PXC version release notes

Author: nastena1606

.github/ISSUE_TEMPLATE/release-notes-template-ps-based-variant.md

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+---
+name: Release notes template PS-based variant
+about: Simplify release notes creation
+title: Release notes PDPS <version>
+labels: ''
+assignees: nastena1606
+
+---
+
+# Percona Distribution for MySQL <version> using Percona Server for MySQL (YYY-MM-DD)
+
+**Installation** : [Installing Percona Distribution for MySQL](installing.md)|
+
+
+Percona Distribution for MySQL is a single solution with the best and most critical enterprise components from the MySQL open-source community, designed and tested to work together.
+
+Percona Distribution for MySQL provides two deployment variants: one is based on *Percona Server for MySQL* and another one is based on *Percona XtraDB Cluster*.
+
+This release of Percona Distribution for MySQL is focused on the *Percona Server for MySQL*-based deployment variant. It is based on [Percona Server for MySQL <version>](https://www.percona.com/doc/percona-server/8.0/release-notes/Percona-Server-<version>.html).
+
+## Release Highlights
+
+The following list are some of the bug fixes for *MySQL* 8.0.27, provided by Oracle, and included in Percona Server for MySQL and Percona Distribution for MySQL:
+
+
+## Packaging Notes
+
+## Known issues
+
+
+---
+
+The following is the list of components supplied with *Percona Server for MySQL*-based deployment variant of Percona Distribution for MySQL:
+
+| Component           | Version   | Description                                |
+| ------------------- | --------- | -------------------------------------------|
+| Orchestrator        | [<version>]()     | The replication topology manager for Percona Server for MySQL|
+| ProxySQL            | [<version>]()    | A high performance, high-availability, protocol-aware proxy for MySQL|
+| Percona XtraBackup  | [<version>]() | An open-source hot backup utility for MySQL-based servers|
+| Percona Toolkit     | [<version>]()    | The set of scripts to simplify and optimize database operation|
+| MySQL Shell         | [<version>]()     | An advanced client and code editor for MySQL Server |
+| MySQL Router        | [<version>]()     | Lightweight middleware that provides transparent routing between your application and back-end MySQL servers |

.github/ISSUE_TEMPLATE/release-notes-template-pxc-based-variant.md

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+---
+name: Release notes template PXC-based variant
+about: 'Simplify the release notes creation '
+title: Release notes PDPXC <version>
+labels: ''
+assignees: ''
+
+---
+
+# Percona Distribution for MySQL <version> using Percona XtraDB Cluster (<YYYY-MM-DD>)
+
+**Installation**- [Installing Percona Distribution for MySQL](installing.md)
+
+Percona Distribution for MySQL is a single solution with the most critical enterprise components from the MySQL open source community, designed and tested to work together.
+
+Percona Distribution for MySQL provides two deployment variants: one is based on *Percona Server for MySQL* and another one is based on *Percona XtraDB Cluster*. 
+
+This release of Percona Distribution for MySQL is focused on the *Percona XtraDB Cluster*-based deployment variant. It is based on [Percona XtraDB Cluster <version>](https://www.percona.com/doc/percona-xtradb-cluster/8.0/release-notes/Percona-XtraDB-Cluster-<version>.html)
+
+## Release Highlights
+
+The following lists a number of the bug fixes for *MySQL* 8.0.28, provided by Oracle, and included in Percona XtraDB Cluster and Percona Distribution for MySQL:
+
+
+
+The following is the list of components supplied with the *Percona XtraDB Cluster*-based deployment variant of Percona Distribution for MySQL:
+
+| Component           | Version   | Description                                |
+| ------------------- | --------- | -------------------------------------------|
+| Percona XtraBackup  | [<version>](https://docs.percona.com/percona-xtrabackup/8.0/release-notes/8.0/<version>.html)    | An open-source hot backup utility for MySQL-based servers that doesn’t lock your database during the backup.|
+| HAProxy             | [<version>](http://git.haproxy.org/?p=haproxy-2.5.git;a=commit;h=ba44b431294b6ddb65d5841632789dabf253439d) | A high-availability and load-balancing solution for Percona XtraDB Cluster. This is a default proxy.|
+| ProxySQL            | [<version>](https://docs.percona.com/proxysql/release-notes-<version>html)     | A high performance, high-availability, protocol-aware proxy for MySQL.          |
+| Percona Toolkit     | [<version>](https://www.percona.com/doc/percona-toolkit/LATEST/release_notes.html#<version>)     | The set of scripts to simplify and optimize database operation. |