Automate branch creation on issue assignment (#1181)

* automate branch creation on issue assignment

* add enhancement label to feature request issues

Author: ClaudiaComito

.github/ISSUE_TEMPLATE/feature_request.md

@@ -2,7 +2,7 @@
 name: Feature request
 about: Suggest missing features or functionalities
 title: ''
-labels: ''
+labels: 'enhancement'
 assignees: ''
 
 ---

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,3 +1,15 @@
+## Due Diligence
+<!--- Please address the following points before setting your PR "ready for review".
+--->
+- General:
+    - [ ]  **base branch** must be `main` for new features, latest release branch (e.g. `release/1.3.x`) for bug fixes
+    - [ ]  **title** of the PR is suitable to appear in the [Release Notes](https://github.com/helmholtz-analytics/heat/releases/latest)
+- Implementation:
+    - [ ] unit tests: all split configurations tested
+    - [ ] unit tests: multiple dtypes tested
+    - [ ] documentation updated where needed
+
+
 ## Description
 
 <!--- Include a summary of the change/s.
@@ -42,11 +54,5 @@ my be illegible. It may be easiest to save the output of each to a file.
 --->
 
 
-## Due Diligence
-- [ ] All split configurations tested
-- [ ] Multiple dtypes tested in relevant functions
-- [ ] Documentation updated (if needed)
-- [ ] Title of PR is suitable for corresponding CHANGELOG entry
-
 #### Does this change modify the behaviour of other functions? If so, which?
 yes / no

.github/issue-branch.yml

@@ -0,0 +1,13 @@
+mode: auto
+silent: false
+branchName: full
+defaultBranch: 'main'
+
+branches:
+  - label: bug
+    name: release/1.3.x
+    prefix: bugs/
+  - label: enhancement
+    prefix: features/
+  - label: documentation
+    prefix: docs/

.github/workflows/create-branch-on-assignment.yml

@@ -0,0 +1,16 @@
+name: Create branch on assignment
+
+on:
+  # The issues event below is only needed for the default (auto) mode,
+  # you can remove it otherwise
+  issues:
+    types: [ assigned ]
+
+jobs:
+  create_issue_branch_job:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create Issue Branch
+        uses: robvanderleek/create-issue-branch@main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}