Add issue and PR templates (#571)

* docs: add issue template
* docs: add PR template
* docs: add database options

Author: starcat37

.github/ISSUE_TEMPLATE.md

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+### Version
+Please specify the versions you are using. Exact version numbers are preferred.
+- Pymyrepl (e.g., 1.0.2):
+- OS (e.g., Ubuntu 18.04):
+- Database and version (Remove unnecessary options):
+  - MySQL: 
+  - MariaDB: 
+  - Percona:
+
+### System Variables
+List relevant system variables using the query `SHOW VARIABLES LIKE '<variable_name_here>';`
+- `log_bin`:
+- `binlog_format`:
+- `binlog_row_image`:
+- `enforce_gtid_consistency`:
+- `gtid_mode`:
+
+If you are using MySQL 8.0.14 or later, please also provide the following variables:
+- `binlog_row_metadata`:
+- `binlog_row_value_options`:
+
+### Symptoms
+<!--Provide a description of the issue. Include error messages if available.-->
+
+### Steps to Reproduce
+<!--Provide a clear and detailed list of steps to reproduce the issue.-->
+
+### Expected Outcome
+<!--Describe what you expected to happen.-->
+
+### Actual Outcome
+<!--Describe what actually happened.-->
+
+### Planning to Resolve
+<!--Please check one of the following:-->
+- [ ] I plan to create a pull request to resolve this issue.
+- [ ] I don't plan to resolve this myself and would like someone else to address it.

.github/PULL_REQUEST_TEMPLATE.md

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+### Description
+<!--Please describe your pull request as detailed as possible. Include information on what problem it solves, what features it adds, etc.-->
+
+### Type of Change
+- [ ] Bug fix
+- [ ] New feature
+- [ ] Documentation update
+- [ ] Other (please specify below)
+
+### Checklist
+- [ ] I have read and understood the [CONTRIBUTING.md](https://github.com/julien-duponchelle/python-mysql-replication/blob/main/CONTRIBUTING.md) document.
+- [ ] I have checked there aren't any other open [Pull Requests](https://github.com/julien-duponchelle/python-mysql-replication/pulls) for the desired changes.
+- [ ] This PR resolves an issue #[Issue Number Here].
+
+### Tests
+- [ ] All tests have passed.
+- [ ] New tests have been added to cover the changes. (describe below if applicable).
+
+### Additional Information
+<!--If there's any additional information or context you'd like to provide for this PR, such as screenshots, reference documents, or release notes, please include them here.-->
+