Init tool codemd

[kahlys]

No description provided.

[Copilot]

Pull request overview

This PR initializes a new Go-based command-line tool called "codemd" (with CLI name "md-code-lite") that converts between markdown files containing code blocks and individual source code files. The tool supports bidirectional conversion: extracting code blocks from markdown into separate source files, and consolidating source files into a single markdown document with properly formatted code blocks.

Changes:

• Added core conversion logic for markdown ↔ source files with language detection for 40+ file types
• Implemented CLI commands (tocode and tomd) using the Cobra framework for user interaction
• Included comprehensive test coverage with golden file testing approach and GitHub Actions CI workflows

Reviewed changes

Copilot reviewed 14 out of 15 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
go.mod	Module definition with dependencies (cobra, testify)
go.sum	Dependency checksums
main.go	CLI command definitions and file system utilities
codemd.go	Core conversion logic between markdown and source files
markdown.go	Language detection utilities based on file extensions
codemd_test.go	Test suite for markdown/source file conversions
testdata/*	Test fixtures including golden files and sample code
.golangci.yml	Linting configuration for code quality
.github/workflows/*	CI/CD workflows for tests and linting
README.md	Basic project description

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