update all issue templates

.github/ISSUE_TEMPLATE/bug_report_default.md

@@ -0,0 +1,41 @@
+---
+name: Bug report (tiptap v2)
+about: Create a report to help us improve tiptap
+url: https://github.com/ueberdosis/tiptap/issues/new
+title: ''
+labels:
+  - bug
+  - v2
+assignees: ''
+---
+
+**Description**
+A clear and concise description of what the bug is.
+
+**Steps to reproduce the bug**
+Steps to reproduce the behavior:
+1. Go to …
+2. Type in …
+3. Click on …
+4. See error message
+
+**CodeSandbox**
+I created a CodeSandbox to help you debug the issue:
+
+* Vue: https://codesandbox.io/s/tiptap-issue-template-b83rr?file=/src/components/Tiptap.vue
+* React: https://codesandbox.io/s/tiptap-react-08yxr
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshot, video, or GIF**
+If applicable, add screenshots to help explain your problem.
+
+**Environment?**
+ - operating system:
+ - browser:
+ - mobile/desktop:
+ - tiptap version:
+
+**Additional context**
+Add any other context about the problem here.