Add Pull Request template for SWoC '26 contributions

[Nitya-003]

Description

To ensure high-quality contributions and maintain the rigor of the SpectraGraph Intelligence Studio, we need to implement a standardized PULL_REQUEST_TEMPLATE.md.

With SWoC contributors working on modular transforms and UI components, a template is necessary to guide them in providing the right technical context, testing evidence, and ethical considerations.

Proposed Requirements

• Create a .github/pull_request_template.md that includes the following sections:

1. Linked Issue: A field to reference the issue being closed (e.g., Closes Bug : Fix Async/Sync Database Mismatch #10).
2. Type of Change: Checkboxes for:

• New Transform (OSINT Source)

• Core Logic / API

• UI / Dashboard Enhancement

• Bug Fix

• Transform Lifecycle Checklist: (Specific to SpectraGraph)

1. Does the transform follow the BaseTransform subclass?
2. Is there proper validation for input entities (IP, Domain, etc.)?
3. Are Pydantic types used for normalization?

• Testing Evidence: Mandatory section to paste logs from make dev or terminal output.
• Visuals: A section for screenshots/GIFs (essential for UI updates).
• Ethical Review: A checkbox confirming the contribution adheres to the Ethics & Safety Guidelines.

Why this is needed

Standardizing PRs will significantly reduce the time maintainers spend asking for missing information (like screenshots or API logic details). It also helps SWoC contributors ensure their code is "merge-ready" by following a clear checklist.

I would love to work on this issue and Submit a PR.
Labels: documentation, SWoC'26, good-first-issue, SWOC