Add PocketPay SDK contributor self-assessment form

[El-swaggerito]

Description

Difficulty: Hard

Type: Documentation

Summary

Create a contributor self-assessment form for PocketPay SDK.

Current Behaviour

Contributors may not objectively evaluate whether their work is ready before review or payment periods.

Expected Behaviour

The repo should provide a self-assessment form that asks contributors to confirm scope, tests, CI, docs, limitations, and acceptance criteria.

Suggested Implementation

Create a self-assessment form and link it from the PR template and contributor docs.

Files or Areas Likely Affected

• src/
• tests/
• docs/
• README.md
• .github/
• package.json

Acceptance Criteria

• Self-assessment form is added.
• Scope confirmation is included.
• Test evidence is included.
• CI status is included.
• Known limitations are included.
• Acceptance criteria confirmation is included.

Additional Notes

This supports honest self-review before payment day.