chore: add github issule templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve 
+---
+
+**Problem**
+
+<!-- A clear and concise description of what the bug is. -->
+
+**Log**
+
+If applicable, add logs to help explain your problem.
+
+**Environment:**
+ - Dufs version:
+ - Browser/Webdav Info: 
+ - OS Info: 

.github/ISSUE_TEMPLATE/feature_requst.md

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+---
+name: Feature Request
+about: If you have any interesting advice, you can tell us.
+---
+
+## Specific Demand
+
+<!--
+What feature do you need, please describe it in detail.
+-->
+
+## Implement Suggestion
+
+<!--
+If you have any suggestion for complete this feature, you can tell us.
+-->

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "cargo" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "monthly"