Add initial version of the issue template.

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,53 @@
+<!---
+Copyright (C) 2020 Intel Corporation
+
+SPDX-License-Identifier: MIT
+-->
+
+### My actions before raising this issue
+- [ ] Read/searched [the docs](https://github.com/opencv/cvat/tree/master#documentation)
+- [ ] Searched [past issues](/issues)
+
+<!--- Provide a general summary of the issue in the Title above -->
+
+### Expected Behaviour
+<!--- If you're describing a bug, tell us what should happen. If you're
+suggesting a change/improvement, tell us how it should work -->
+
+### Current Behaviour
+<!--- If describing a bug, tell us what happens instead of the expected
+behavior. If suggesting a change/improvement, explain the difference from
+current behavior -->
+
+### Possible Solution
+<!--- Not obligatory, but suggest a fix/reason for the bug, or ideas how
+to implement the addition or change -->
+
+### Steps to Reproduce (for bugs)
+<!--- Provide a link to a live example, or an unambiguous set of steps to
+reproduce this bug. Include code to reproduce, if relevant -->
+1.
+1.
+1.
+1.
+
+### Context
+<!--- How has this issue affected you? What are you trying to accomplish?
+Providing context helps us come up with a solution that is most useful in
+the real world -->
+
+### Your Environment
+<!--- Include as many relevant details about the environment you experienced
+the bug in -->
+- Git hash commit (`git log -1`):
+- Docker version `docker version` (e.g. Docker 17.0.05):
+- Are you using Docker Swarm or Kubernetes?
+- Operating System and version (e.g. Linux, Windows, MacOS):
+- Code example or link to GitHub repo or gist to reproduce problem:
+- Other diagnostic information / logs:
+ <details>
+ <summary>Logs from `cvat` container</summary>
+ </details>
+
+### Next steps
+You may [join our Gitter](https://gitter.im/opencv-cvat/public) channel for community support.