Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,18 @@
+---
+name: Bug report
+about: Report a bug in Godot
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Godot version:**
+
+**OS/device including version:**
+
+**Issue description:**
+
+**Steps to reproduce:**
+
+**Minimal reproduction project:**

.github/ISSUE_TEMPLATE/feature---enhancement-request.md

@@ -0,0 +1,19 @@
+---
+name: Feature / Enhancement Request
+about: Adding new features or improving existing ones.
+title: 'IMPORTANT: This repository no longer accepts feature / enhancement requests.'
+labels: ''
+assignees: ''
+
+---
+
+**IMPORTANT, PLEASE READ**
+
+Feature / Enhancement requests are no longer accepted in the main Godot repository.
+Please open an item by filling the relevant fields in the *Proposals* repository:
+
+https://github.com/godotengine/godot-proposals/issues/new/choose
+
+Do not submit to this repository or your issue will be closed.
+
+**IMPORTANT, PLEASE READ**