chore(github): add issue templates (bug / feature / question)

YAML issue forms with required fields so new reports arrive with the
context needed to act on them (version, OS, reproduction steps for
bugs; problem-before-solution for features). Auto-applies the matching
label.

blank_issues_enabled: false forces use of one of the three templates.
config.yml also surfaces the Patreon link as a contact option.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.github/ISSUE_TEMPLATE/question.yml

@@ -0,0 +1,38 @@
+name: Question
+description: Ask how something works or how to do something in Open CAD Studio.
+title: "[Question]: "
+labels: ["question"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        For "is this a bug?" or "is this expected?" type questions, use
+        this template. If you already know it's broken, use **Bug report**
+        instead.
+
+        Before asking, please check the [closed issues](https://github.com/HakanSeven12/OpenCADStudio/issues?q=is%3Aissue+is%3Aclosed)
+        in case the question has been answered.
+
+  - type: textarea
+    id: question
+    attributes:
+      label: Question
+      description: What are you trying to figure out?
+    validations:
+      required: true
+
+  - type: textarea
+    id: tried
+    attributes:
+      label: What you've tried
+      description: Commands you ran, settings you toggled, docs you read.
+    validations:
+      required: false
+
+  - type: input
+    id: version
+    attributes:
+      label: Open CAD Studio version
+      placeholder: "0.4.0"
+    validations:
+      required: false