Add httpsuite framework to README.md

[rluders]

Required links

• Forge link (github.com, gitlab.com, etc): https://github.com/rluders/httpsuite
• pkg.go.dev: https://pkg.go.dev/github.com/rluders/httpsuite
• goreportcard.com: https://goreportcard.com/report/github.com/rluders/httpsuite
• Coverage service link (codecov, coveralls, etc.): https://app.codecov.io/gh/rluders/httpsuite

Pre-submission checklist

• I have read the Contribution Guidelines
• I have read the Quality Standards

Repository requirements

• The repo has a go.mod file and at least one SemVer release (vX.Y.Z).
• The repo has an open source license.
• The repo documentation has a pkg.go.dev link.
• The repo documentation has a goreportcard link (grade A- or better).
• The repo documentation has a coverage service link.

Repository recommendations

• The repo has a continuous integration process (GitHub Actions, etc.).
• CI runs tests that must pass before merging.

Pull Request content

• This PR adds/removes/changes only one package.
• The package has been added in alphabetical order.
• The link text is the exact project name.
• The description is clear, concise, non-promotional, and ends with a period.
• The link in README.md matches the forge link above.

Category quality

• The packages around my addition still meet the Quality Standards.

[github-actions]

Automated Quality Checks

Required checks

✅ Repo: accessible, has go.mod and SemVer release
✅ pkg.go.dev: OK
✅ Go Report Card: OK (grade unknown)

Additional checks

✅ License: MIT
✅ Maturity: repo has 5+ months of history
✅ CI/CD: GitHub Actions workflows detected
✅ README: present
✅ Coverage: link accessible

These checks are automated and do not replace maintainer review. See CONTRIBUTING.md for full guidelines.

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PR Diff Validation

Content checks

✅ Files changed: only README.md
✅ Single item: one package added
✅ Link consistency: README link matches forge link in PR body
✅ Link text: matches repository name
✅ Description: ends with punctuation
✅ Description tone: no promotional language detected
✅ Category size: Web Frameworks has 41 items

Automated diff validation — does not replace maintainer review.