Task-Add GitHub Project notes

[learncold]

Summary

Add docs/GitHub Project.md to explain project board usage and team workflow.

Parent Issue

No response

Area

Docs

Target Sprint

Sprint 1

Scope

• Add markdown file about Github Project of this 졸업프로젝트.

Acceptance Criteria

• None.

Architecture / Dependency Check

• None.

Verification Plan

• None.

Dependencies / Blockers

No response

Repository Checks

• I checked for an existing related issue or epic before creating this task.
• I will keep the issue title aligned with the repository naming convention.