Add bug report template

.github/ISSUE_TEMPLATE/bug-report.md

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+**General:**
+ - Project: wikipedia.org   / wiktionary.org / wikiquote.org  / 
+            wikibooks.org   / wikisource.org / wikinews.org   / 
+            wikiversity.org / wikidata.org   / wikivoyage.org / 
+            [commons|meta|species|incubator|wikitech].wikimedia.org
+ - Edition: [e.g. en.]
+ - URL:     [e.g. https://en.wikipedia.org/wiki/C%2B%2B#Compatibility]
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add ***full size*** screenshots to help explain your problem.
+
+**To Reproduce:**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See shit
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. ios, windows] or kernel type [e.g. darwin, linux]
+ - Browser [e.g. chrome, firefox] or 
+   Browser type [e.g. chrome-based, firefox-based] or 
+   Browser engine [e.g. webkit, gecko]
+ - Version [e.g. 63]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhoneX]
+ - OS: [e.g. ios12.3]
+ - Browser [e.g. stock browser (safari, samsung browser etc)]
+ - Version [e.g. 63]
+
+**Additional context**
+Add any other context about the problem here.