Create HLS/DASH playback issue template (#1162) (#1163)

* Create playback-issue.md

* Fix spelling

* Fix bulletpoint

Author: stefankiesz

.github/ISSUE_TEMPLATE/playback-issue.md

@@ -0,0 +1,38 @@
+---
+name: HLS/DASH/Console Playback Failure
+about: Are you experiencing a failure when playing your streamed media?
+title: "[Playback Failure]"
+labels: Playback
+assignees: ''
+
+---
+
+**NOTE:** This template is for failure to playback issues of HLS, DASH, and AWS console players. If the playback issue is related to GetMedia playback, please submit an issue on the [KVS Java Parser Library](https://github.com/aws/amazon-kinesis-video-streams-parser-library) repository. If the issue is related to HLS/DASH/Console, but the issue is not regarding a failure to playback (such as a latency issue or general question), please submit using the general question template.
+
+### Brief one-liner description of the issue:
+...
+
+### Please include the following details:
+- Problematic playback methods (HLS, DASH, and/or AWS Console), operating systems, browsers:
+  - ...
+- Working playback methods (were you able to playback the stream using using any methods?), operating systems, browsers:
+  - ...
+- Is the stream's data retention setting greater than 0?
+- Does your stream meet the [KVS video playback track requirements](https://docs.aws.amazon.com/kinesisvideostreams/latest/dg/video-playback-requirements.html)?
+- If there are fragment decoding errors:
+  - Are fragment timestamps accurate, in the correct order, and have no duplicates? ([ListFragments](https://docs.aws.amazon.com/kinesisvideostreams/latest/dg/API_reader_ListFragments.html) can be used to retrieve fragment information for a stream)
+  - Is your application encoding the frame data using the H.264 format?
+  - Does the resolution of the frames match the resolution specified in the Codec Private Data?
+  - Does the H.264 profile and level of the encoded frames match the profile and level specified in the Codec Private Data?
+  - Does the browser/OS support the profile/level combination?
+- If there are HLS playback failures:
+  - Is the fragment duration less than 1 second? If yes, does issue persist with fragments longer than 1 second?
+  - Is each HLS streaming session URL being used by only one player at a time?
+  - Does each fragment have a consistent number of tracks, is not changing between having both an audio and video track and only a video track, and has consistent encoder settings (resolution and frame rate not changing between fragments in each track)?
+  - Does issue persist after fetching using GetHLSStreamingSessionURL with the ContainerFormat and DiscontinuityMode parameters set to different values?
+
+
+### Logging
+Add any relevant SDK and player logs.  IMPORTANT NOTE:  Please make sure to NOT share AWS access credentials under any circumstance!  Please make sure they are not in the logs.
+
+** If you would not like to open an issue to discuss your solution in open-platform, please email your question to [email protected] **