Create issue template (#62)

* Create issue template

* Added AI Core support channel

.github/ISSUE_TEMPLATE/sdk-issue.md

@@ -0,0 +1,86 @@
+---
+name: SAP AI SDK for Java issue
+about: Report an issue with the SAP AI SDK for Java
+---
+
+<!--
+For any issue with the AI Core client, use the Slack Support Channel for  AI Core https://sap-ml.slack.com/archives/C01DZC6EGB0 then simply type "/support-request"
+
+Thank you for reporting an issue with the SAP AI SDK for Java. We prepared this issue template for you to help you with collecting and providing necessary information.
+
+_Please_ take the time to fill out the information in this template. _It is vital_ to get an understanding of the problem and find out what is going wrong. It really enables us to come back to you with meaningful help as fast as possible.
+
+Be sure to remove **any confidential** information (examples: credentials or internal URLs) before publishing the issue on the internet.
+-->
+
+## Issue Description
+<!--
+Please provide a detailed description of your issue here. Use the points below as a guideline on what information might help us in answering your questions.
+-->
+
+Important information:
+- Your code
+- Expected outcome
+- Actual outcome
+- Steps attempted to resolve the issue
+- In case of issues with any of our clients:
+    - What happens when a request is performed directly via an HTTP client tool such as Postman?
+    - In case that succeeds please provide details on the request such as URL, query parameters, header parameters, prerequisite requests (e.g. CSRF token), etc.  
+- Potentially missing information (open questions you might have)
+
+### Impact / Priority
+<!--
+ Please briefly state how this issue impacts your project and what your timeline is.
+ -->
+
+Affected development phase: e.g. Getting Started, Development, Release, Production
+
+Impact: e.g. No Impact, Inconvenience, Impaired, Blocked
+
+Timeline: e.g. Go-Live is in 12 weeks.
+
+## Error Message
+
+```
+Please paste your stracktrace here within the backticks (replacing this comment)
+```
+
+<!-- Application Logs
+Please make sure you [set your log level to debug](https://sap.github.io/cloud-sdk/docs/java/guides/logging-overview#configuring-logback) and attach the resulting log output as .txt or .log file to this issue, no Kibana links.
+This is _very important_ as it usually gives a lot of information that is necessary to get to the root cause of an issue. Be sure to redact confidential information before posting.
+-->
+
+<!-- Maven Dependency Tree
+Please attach the Maven dependency tree of your project. You can obtain that by running "mvn dependency:tree" on the command line. Kindly note that you could have several pom.xml files in your project.
+If so, please provide the dependency tree for the pom.xml of the root module and the module named like `application´ or `srv` that contains the application logic.
+-->
+
+## Project Details
+
+<!--
+Please provide as much information about your project as possible.
+If you cannot share your project for confidentiality reasons, please consider providing a minimal working example https://en.wikipedia.org/w/index.php?title=Minimal_working_example&oldid=893866607
+-->
+
+* SDK Version: <your SAP AI SDK version here>
+<!-- The group id of the modules of the SAP AI SDK start with "com.sap.ai.sdk" -->
+* Link to GitHub repo: <your link here>
+* Project type, for example:
+    * [ ] CAP Project
+    * [ ] Spring Boot
+    * [ ] None of the above:
+* Platform:
+    * [ ] Cloud Foundry
+    * [ ] Deploy with Confidence (Cloud Foundry)
+    * [ ] None of the above:
+
+-----
+
+### Checklist
+
+- [ ] This is not an AI Core client issue -> [Slack Support Channel for  AI Core](https://sap-ml.slack.com/archives/C01DZC6EGB0)
+- [ ] Description provided with all relevant information
+- [ ] Exception and stack trace provided
+- [ ] Attached debug logs
+- [ ] Attached dependency tree
+- [ ] Provided AI SDK version & link to relevant source code