Update issue templates

.github/ISSUE_TEMPLATE/---tracker--.md

@@ -0,0 +1,11 @@
+---
+name: 添加 Tracker 源
+about: 请求添加 Tracker 源。
+title: 请求添加 Tracker 源
+labels: Enhancement, Tracker source
+assignees: ''
+
+---
+
+希望添加以下 Tracker 源：
+https://xxx.xx

.github/ISSUE_TEMPLATE/add-tracker-source.md

@@ -0,0 +1,11 @@
+---
+name: Add Tracker Source
+about: Request to add Tracker Source.
+title: Request to add Tracker Source
+labels: Enhancement, Tracker source
+assignees: ''
+
+---
+
+Hope to add these Tracker sources:
+https://xxx.xx