Added Github issue templates and configuration.

Author: nightjarrr

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Something isn't working as expected
+labels: bug
+---
+
+## What happened
+
+<!-- A clear description of the bug. -->
+
+## How to reproduce
+
+```bash
+# The exact command you ran
+molim ...
+```
+
+**Input files:** <!-- describe the file type(s) involved, e.g. "a .CR2 RAW file", best if you can attached the exact input file. -->
+
+## Expected behaviour
+
+<!-- What you expected to happen. -->
+
+## Actual behaviour
+
+<!-- What actually happened. Include any error output. -->
+
+## Environment
+
+- molim version: <!-- run: molim --version -->
+- OS and version: <!-- e.g. Ubuntu 24.04 -->
+- Tool versions:
+  - ImageMagick: <!-- run: convert --version -->
+  - FFmpeg: <!-- run: ffmpeg -version -->
+  - RawTherapee: <!-- run: rawtherapee --version -->

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest a new command or improvement
+labels: enhancement
+---
+
+## What you would like
+
+<!-- Describe the feature or improvement clearly. -->
+
+## Why this is useful
+
+<!-- Explain the use case. What problem does it solve? -->
+
+## Additional information or context
+
+<!-- Optional: related tools, similar implementations, or other context. -->
+
+---
+
+> **Note:** molim is a personal project. Feature requests are welcome but may
+> not be implemented if they fall outside the author's own workflows. If you
+> need this feature urgently, consider forking the repository.