[skip ci] Convert issue templates to the new issue forms (#5454)

* [SKIP-CI] Update issue config

* [SKIP-CI] Delete redundant Source Issue

* [SKIP-CI] Convert bug report to an issue form

* [SKIP-CI] Convert feature request to an issue form

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +1,11 @@
 blank_issues_enabled: false
 contact_links:
-  - name: Tachiyomi help website
-    url: https://tachiyomi.org/help/
-    about: Common questions are answered here.
-  - name: Tachiyomi extensions GitHub repository
+  - name: ⚠️ Extension/source issue
+    url: https://github.com/tachiyomiorg/tachiyomi-extensions/issues/new/choose
+    about: Issues and requests for extensions and sources should be opened here.
+  - name: 📦 Tachiyomi extensions
     url: https://github.com/tachiyomiorg/tachiyomi-extensions
-    about: Issues about an extension/source/catalogue should be opened here instead.
+    about: Extensions and sources.
+  - name: 🌐 Tachiyomi website
+    url: https://tachiyomi.org/help/
+    about: Guides, troubleshooting, and answers to common questions.