Update git feature request (#2342)

.github/ISSUE_TEMPLATE/feature_request.md

@@ -7,14 +7,19 @@ assignees: ''
 
 ---
 
-##### **Is your feature request related to a problem?**
+#### **Is your feature request related to a problem?**
-A clear and concise description of the problem (e.g., I'm always frustrated when [...]; Exiv2 does not support XXX format [...])
+A clear and concise description of the problem, including your use case for exiv2 and any impact on your workflow.
 
-##### **Describe the solution you would like**
+#### **Describe the solution you would like**
 A short description of what you want to happen.
 
-##### **Describe alternatives you have considered**
+#### **Describe alternatives you have considered**
-A simple explanation of any alternative solutions or features you have considered.
+A simple explanation of any alternative solutions (e.g., using ExifTool) or features you have considered (e.g., convert the file to JPEG).
 
-##### **Additional context**
+#### **Desktop**
-Add any other information about the feature request here (e.g. screenshots, URLs).
+- OS and version: (e.g., Linux (Fedora 36), macOS 12.5, Windows 11)
+- Exiv2 version and source: (e.g., 0.27.5 from exiv2.org)
+- Any software using exiv2 and source: (e.g., darktable 4.0 from darktable.org)
+
+#### **Additional context**
+Add any other information about the feature request here (e.g. screenshots, URLs, test files).