Codama Dart Renderer: Docs, E2E Testing,

[ERoydev]

This pull request introduces comprehensive improvements to the Codama Dart renderer project, focusing on documentation, end-to-end (e2e) testing infrastructure, Dart code generation templates, and code quality tooling. The main changes include a new and detailed README.md, the addition of e2e testing scripts and Dart project setups, the introduction of Dart code generation templates using Nunjucks, and the setup of a TypeScript ESLint configuration.

Summary of most important changes:

Documentation:

• Major rewrite and expansion of README.md to provide clear installation, usage, example code, directory structure, and limitations for the Codama Dart renderer. This greatly improves onboarding and user understanding.

End-to-End Testing Infrastructure:

• Added e2e Dart project templates (pubspec.yaml) for multiple test projects (dummy, system, memo, meteora, anchor) to facilitate generated code validation. [1] [2] [3] [4] [5]
• Introduced code generation scripts (generate.cjs, generate-anchor.cjs) for running codegen against specified projects, and a test.sh script to automate code generation and static analysis, reporting errors in a user-friendly way. [1] [2] [3]

Code Generation Templates:

• Added Nunjucks templates for Dart code generation, including a main layout (layout.njk), macros for Dart code patterns (macros.njk), and account module exports (pages/accountsMod.njk). These templates enable structured and maintainable Dart code output from IDL files. [1] [2] [3]

Code Quality Tooling:

• Introduced a TypeScript ESLint configuration (eslint.config.cjs) with sensible rules for code consistency and error prevention in the codebase.