Added the PULL_REQUEST_TEMPLATE.md file, adjusted tests

Author: h-chmeruk

template/.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,14 @@
+### Which issue(s) are closed by this pull request?
+
+Closes #
+
+### Changes proposed in this pull request
+
+-
+-
+-
+
+### Checklist for a complete Pull request
+- [ ] I have read the [contribution guidelines](https://pyfar-gallery.readthedocs.io/en/latest/contribute/index.html)
+- [ ] I have added/expanded tests according to the [testing guidelines](https://pyfar-gallery.readthedocs.io/en/latest/contribute/packages/testing.html).
+- [ ] I have added an entry to the [history file](../HISTORY.rst).

tests/test_copier.py

@@ -30,6 +30,7 @@ def test_project_folder(default_project):
     ".readthedocs.yml",
     ".copier-answers.yml",
     ".editorconfig",
+    ".github/PULL_REQUEST_TEMPLATE.md",
 ])
 def test_generated_file_exists(default_project, file_name):
     assert default_project.project_dir.joinpath(file_name).exists()