Added github templates (copied and slightly modified from recommender) (#210)

* added github templates

* added labels

.github/CODEOWNERS

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+# See https://help.github.com/articles/about-codeowners/
+# for more info about CODEOWNERS file
+
+*           @PatrickBue
+

.github/ISSUE_TEMPLATE.md

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+### Description
+<!--- Describe your issue/bug/request in detail -->
+
+### In which platform does it happen?
+<!--- Describe the platform where the issue is happening (use a list if needed) -->
+<!--- For example: -->
+<!--- * Windows/Linux.  -->
+<!--- * CPU/GPU.  -->
+<!--- * Azure Data Science Virtual Machine. -->
+
+### How do we replicate the issue?
+<!--- Please be specific as possible (use a list if needed). -->
+<!--- For example: -->
+<!--- * Create a Linux Data Science Virtual Machine one Azure with V100 GPU -->
+<!--- * Run unit test `test_classification_data.py` -->
+<!--- * ... -->
+
+### Expected behavior (i.e. solution)
+<!--- For example:  -->
+<!--- * The test `test_is_data_multilabel` for GPU model training should pass successfully. -->
+
+### Other Comments

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG]"
+labels: 'bug'
+assignees: ''
+
+---
+
+### Description
+<!--- Describe your issue/bug/request in detail -->
+
+### In which platform does it happen?
+<!--- Describe the platform where the issue is happening (use a list if needed) -->
+<!--- For example: -->
+<!--- * Windows/Linux.  -->
+<!--- * CPU/GPU.  -->
+<!--- * Azure Data Science Virtual Machine. -->
+
+### How do we replicate the issue?
+<!--- Please be specific as possible (use a list if needed). -->
+<!--- For example: -->
+<!--- * Create a Linux Data Science Virtual Machine one Azure with V100 GPU -->
+<!--- * Run unit test `test_classification_data.py` -->
+<!--- * ... -->
+
+### Expected behavior (i.e. solution)
+<!--- For example:  -->
+<!--- * The test `test_is_data_multilabel` for GPU model training should pass successfully. -->
+
+### Other Comments

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[FEATURE_REQUEST]"
+labels: 'feature_request'
+assignees: ''
+
+---
+
+### Description
+<!--- Describe your expected feature in detail -->
+
+### Expected behavior with the suggested feature
+<!--- For example:  -->
+<!--- *Adding algorithm xxx will help people understand more about xxx use case scenarios. -->
+
+### Other Comments

.github/ISSUE_TEMPLATE/general_ask.md

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+---
+name: General ask
+about: Technical/non-technical asks about the repo
+title: "[ASK]"
+labels: 'ask'
+assignees: ''
+
+---
+
+### Description
+<!--- Describe your general ask in detail -->
+
+### Other Comments

.github/PULL_REQUEST_TEMPLATE.md

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+### Description
+<!--- Describe your changes in detail -->
+<!--- Why is this change required? What problem does it solve? -->
+
+
+### Related Issues
+<!--- If it fixes an open issue, please link to the issue here. -->
+
+
+### Checklist:
+<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
+- [ ] I have followed the [contribution guidelines](../CONTRIBUTING.md) and code style for this project.
+- [ ] I have added tests covering my contributions.
+- [ ] I have updated the documentation accordingly.