Add distinct emoji issue forms for bug, feature, refactor, and blank submissions (#11)

* Initial plan

* chore: add distinct emoji images to issue templates

Co-authored-by: JusterZhu <11714536+JusterZhu@users.noreply.github.com>
Agent-Logs-Url: https://github.com/GeneralLibrary/GeneralUpdate.Avalonia/sessions/e28f31d7-cd0e-4c31-9f2c-ffcc01aba329

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: JusterZhu <11714536+JusterZhu@users.noreply.github.com>

Author: Copilot

.github/ISSUE_TEMPLATE/blank_issue.yml

@@ -1,9 +1,10 @@
-name: Blank issue
+name: 📝 Blank issue
 description: Open an issue with a custom format.
 title: "[Issue]: "
 body:
   - type: markdown
     attributes:
       value: |
-        Please provide enough context so maintainers can help effectively.
+        ![Blank issue emoji](https://github.githubassets.com/images/icons/emoji/unicode/1f4dd.png?v8)
 
+        Please provide enough context so maintainers can help effectively.

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,4 +1,4 @@
-name: Bug report
+name: 🐞 Bug report
 description: Report a reproducible problem in GeneralUpdate.Avalonia.Android.
 title: "[Bug]: "
 labels:
@@ -7,6 +7,8 @@ body:
   - type: markdown
     attributes:
       value: |
+        ![Bug emoji](https://github.githubassets.com/images/icons/emoji/unicode/1f41e.png?v8)
+
         Thanks for reporting a bug. Please provide enough details for us to reproduce and fix it quickly.
   - type: textarea
     id: summary

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,4 +1,4 @@
-name: Feature request
+name: ✨ Feature request
 description: Suggest a new capability for GeneralUpdate.Avalonia.Android.
 title: "[Feature]: "
 labels:
@@ -7,6 +7,8 @@ body:
   - type: markdown
     attributes:
       value: |
+        ![Feature emoji](https://github.githubassets.com/images/icons/emoji/unicode/2728.png?v8)
+
         Thanks for the suggestion. Please describe the scenario and expected value clearly.
   - type: textarea
     id: summary
@@ -44,4 +46,3 @@ body:
     attributes:
       label: Additional context
       description: Add links, examples, or references.
-

.github/ISSUE_TEMPLATE/refactoring_request.yml

@@ -1,4 +1,4 @@
-name: Refactoring request
+name: ♻️ Refactoring request
 description: Propose internal improvements without changing behavior.
 title: "[Refactor]: "
 labels:
@@ -7,6 +7,8 @@ body:
   - type: markdown
     attributes:
       value: |
+        ![Refactor emoji](https://github.githubassets.com/images/icons/emoji/unicode/267b.png?v8)
+
         Use this template for maintainability improvements, cleanup, and technical debt reduction.
   - type: textarea
     id: scope
@@ -47,4 +49,3 @@ body:
     attributes:
       label: Additional context
       description: Add references, related issues, or code snippets.
-