Add solid-like-a-rock to Code Quality > Linter

[nenadvulic]

Adds solid-like-a-rock to Code Quality → Linter, alphabetically between OCLint and Swiftlint.

Architecture linter that enforces Clean Architecture and TCA import rules using SwiftSyntax.

It parses Swift sources with SwiftSyntax to enforce module import boundaries — Clean Architecture layers (dependencies point inward) and The Composable Architecture peer isolation — as a CI-ready guardrail. Sits alongside SwiftLint/OCLint as a dev tool: open source (MIT), Swift 6, actively maintained, on Swift Package Index and Homebrew.

• Entry placed alphabetically in the existing Linter section.
• Description follows the list format (sentence case, ends with a period).