Vendor helgoboss/helgobox (ReaLearn) as basis for custom UI fork

Stripped upstream git history; starting point for replacing the native
SWELL/Win32 mapping UI with something more suited to bulk editing.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

plugin-reaper-realearn/.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,11 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Question
+    url: https://github.com/helgoboss/helgobox/discussions/categories/q-a
+    about: "GitHub Discussions: Ask or answer a question"
+  - name: Idea
+    url: https://github.com/helgoboss/helgobox/discussions/categories/ideas?discussions_q=category%3AIdeas+is%3Aopen+sort%3Adate_created+
+    about: "GitHub Discussions: Request a new feature or suggest an improvement (please watch out for existing issues first and vote for them)"
+  - name: General feedback
+    url: https://github.com/helgoboss/helgobox/discussions/categories/general
+    about: "GitHub Discussions: Give general feedback"