Add MIT License to the project

[lee-coates]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update
• Infrastructure
• Maintenance

Description

Adds an MIT license to the repository using GitHub’s standard license template, attributed to the CodePDX Organization.

This change formally defines the licensing terms for usage, contribution, and distribution. No code or behavior changes are included.

Related Tickets & Documents

• Related Issue #: N/A
• Closes #: N/A

QA Instructions, Screenshots, Recordings

No QA required. This change adds a LICENSE file only and does not affect runtime behavior or functionality.

Added/updated tests?

• Yes
• No, and this is why: This change does not modify application code or behavior; no tests are applicable.
• I need help with writing tests

Documentation

• If this PR changes the system architecture, Architecture.md has been updated
  (Not applicable — this change is limited to repository licensing.)

[optional] Are there any post deployment tasks we need to perform?

No post-deployment tasks required.

[yangm2]

lgtm