Update issue templates

Author: zapadi

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,39 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: 'type: bug'
+assignees: zapadi
+
+---
+
+**Describe the bug**  
+A clear and concise description of what the bug is.
+
+**To Reproduce**  
+Steps to reproduce the behavior:
+1. Call the Redmine API endpoint '...'
+2. Call the client method: `...`
+3. Inspect the returned response/data
+4. Notice the incorrect behavior or error
+
+**Expected behavior**  
+A clear and concise description of what you expected to happen.
+
+**Sample Code / Request**  
+If applicable, add a minimal code snippet or HTTP request that reproduces the issue.
+
+**API Response / Error**  
+If applicable, paste the response body, error message, or stack trace.
+
+**Environment (please complete the following information):**
+- Library version: [e.g. 4.50.0]
+- .NET runtime: [e.g. .NET 8.0, .NET Framework 4.8]
+- Redmine version: [e.g. 5.1.2]
+- OS: [e.g. Windows 11, Ubuntu 22.04]
+
+**Screenshots**  
+If applicable, add screenshots to help explain the problem.
+
+**Additional context**  
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,28 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[Feature]"
+labels: 'type: enhancement, type: feature'
+assignees: zapadi
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is.
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+Ex: "Add support for calling the `...` endpoint so that I can [...]"
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+Ex: "Right now I make a raw HTTP request using `HttpClient`, but it would be better if the client library exposed [...]"
+
+**Proposed API / Usage Example (if applicable)**  
+If relevant, provide a code snippet, method signature, or example API request/response. 
+```csharp
+var issue = await client.Issues.GetByIdAsync(123, includeChildren: true);
+```
+
+**Additional context**
+Add any other context or screenshots about the feature request here.