Add: issue templates

[mors119]

Summary by CodeRabbit

• Documentation
  • Updated CLI command shorthand from dustfril to dfr across documentation
  • Improved README examples with better code formatting for command walkthroughs

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

This PR establishes foundational project infrastructure by introducing GitHub issue templates for categorized work tracking, enhancing the Rust CI workflow with improved triggers and concurrency controls, configuring Dependabot for automated dependency updates, and updating README documentation to reflect the dfr CLI tool naming and improved formatting.

Changes

Project Infrastructure and Documentation Setup

Layer / File(s)	Summary
GitHub Issue Template System .github/ISSUE_TEMPLATE/EPIC.md, .github/ISSUE_TEMPLATE/FEATURE_REQUEST.md, .github/ISSUE_TEMPLATE/FEATURE_TESK.md, .github/ISSUE_TEMPLATE/TASK.md	Four issue templates are introduced or revised to define Epic, Feature Request, Feature Task, and Task categories, each with templated sections (Goal/Includes, Description/Expected Behavior, Tasks, Description/Done When) and labels to structure issue workflows.
CI/CD Workflow and Dependency Automation .github/workflows/rust.yml, .github/dependabot.yml	Rust CI workflow is refined with main branch targeting, path-ignore filters for markdown/docs, explicit read-only permissions, and concurrency cancellation per reference. Dependabot configuration enables monthly updates for cargo and github-actions with grouped dependencies, limits, and consistent labeling.
Documentation Updates ReadMe.md, ReadMe.ko.md	README examples are reformatted from plain text to fenced code blocks and CLI invocation is updated from dustfril to dfr across both English and Korean versions.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

🐰 Issue templates align the team,
CI pipelines run clean and keen,
Dependabot guards the deps,
Docs now show the newest steps—
Infrastructure springs to life serene! 🚀

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Add: issue templates' accurately reflects the primary change—adding multiple GitHub issue templates (EPIC, FEATURE_REQUEST, FEATURE_TASK, TASK). However, it is somewhat generic and doesn't distinguish this from typical maintenance work, though it is clear and directly related to the main changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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