Add GitHub issue templates for bugs and features

On-behalf-of: SAP <marvin.beckers@sap.com>
Signed-off-by: Marvin Beckers <marvin@kubermatic.com>

.github/ISSUE_TEMPLATE/bug_report.yaml

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+name: Bug Report
+description: Create a report to help us improve
+title: "bug: "
+labels:
+  - kind/bug
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the bug
+      description: Please provide a clear and concise description of the bug.
+      placeholder: |
+        Add logs and screenshots if any.
+    validations:
+      required: true
+
+  - type: textarea
+    id: reproducing
+    attributes:
+      label: Steps To Reproduce
+      description: Steps to reproduce the behavior.
+      placeholder: |
+        1. Go to '...'
+        2. Click on '...'
+        3. Scroll down to '...'
+        4. See the error
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected Behaviour
+      description: A clear and concise description of what you expected to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.yaml

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+name: Feature Request
+description: Suggest an idea for this project
+title: "feature: "
+labels:
+  - kind/feature
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: Feature Description
+      description: Is your feature request related to a problem? A clear and concise description of what the problem is.
+      placeholder: I'm always frustrated when [...]
+    validations:
+      required: true
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: A clear and consise description of what you want to happen.
+      placeholder: We can do [...]
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives
+    attributes:
+      label: Alternative Solutions
+      description: A clear and consise description of any alternative solutions or features that you've considered.
+      placeholder: I think another approach would be [...]
+    validations:
+      required: false
+
+  - type: checkboxes
+    id: contribute
+    attributes:
+      label: Want to contribute?
+      options:
+        - label: I would like to work on this issue.
+          required: false
+
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional Context
+      description: Add any other context or screenshots about the feature request here.
+    validations:
+      required: false