Update issue templates

Author: yyoncho

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,23 @@
+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Note**
+Before logging the bug please make sure that the issue is reproducible with latest melpa packages and it is reproducible with the clean config(the config from the getting started page.
+
+**To Reproduce**
+{populate}
+
+**Expected behavior**
+{populate}
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Logs**
+Please include the debug stack trace (if there is an error) and the content of Messages buffer with `lsp-print-io` set to t in case the bug is related to client->server communication.